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Neapolitan Mastiff

The strong and silent Neo is a watchful guardian who thinks he's a lap dog.

Neapolitan Mastiff Breed Photo

Vital Stats

Dog Breed Group
Working Dogs
Height
Weight
Life Span
8 to 10 years

Breed Characteristics

  • Details

    Adaptability

    based on 6 ratings
  • Details

    Trainability

    based on 6 ratings
  • Details

    Health & Grooming

    based on 6 ratings
  • Details

    All-around friendliness

    based on 4 ratings
  • Details

    Exercise needs

    based on 4 ratings
  • See All Characteristic Ratings


  • Overview

    The slow, rolling gait of this unique breed might be described as lumbering, but there's no mistaking the power in each stride. As he approaches, his massive size, loose skin, and thick facial wrinkles evoke speechless awe, followed by the question, "What type of dog is that?" This striking gentle giant is the Neapolitan Mastiff, also known as the mastino.

    The Neapolitan Mastiff is history come to life. His ancestry is thought to date to 3000 BCE, the beginning of the Bronze Age, the time when Upper and Lower Egypt were unified and mastiff-like working and guard dogs emerged in Tibet.

    While his appearance is unnerving, looks are deceiving. The Neo, as he's often nicknamed, has a reputation for being an affectionate 200-pound lap dog. He is a constant guardian with an intimidating stare that he directs toward strangers, but he's far from being a fighting dog. Steady and loyal, his primary goal is to be with his people. He'll defend them with ferocity if need be, but he's typically not aggressive without reason.

    Like all puppies, young Neos are active, but they mature into adulthood with a preference for lounging around the home or yard. Although they're pretty mellow indoors, Neos aren't especially suited for life in an apartment or condo unless they have room to sprawl. Otherwise, they're likely to shove your furniture out of place or knock objects over in their attempts to find a comfortable resting spot.

    Older children will find the Neo to be a warm and comfortable backrest while watching television or doing homework. He may be too large and clumsy for younger children, however, accidentally knocking them over or stepping on them.

    When it comes to living with a Neo, neat freaks need not apply. The Neo drools after eating or drinking or when he's nervous, and he's notorious for passing gas. Keep a small hand towel for wipeups and a can of air freshener nearby at all times. On the plus side, he's a quiet dog who rarely barks.

    For the family who can provide this large and strong-willed dog with the firm, loving, and consistent guidance he needs, the Neapolitan Mastiff is a wonderful and unique companion who will provide protection and love for everyone in his family. A dog who will protect you, your family, and your home with all the strength and love it poses.

  • Highlights

    • Neapolitan Mastiffs do best in homes with a yard they can patrol. They are calm indoors however and can do fine in an apartment or condo big enough to accommodate their sprawl.
    • Neos are generally clumsy dogs who have trouble navigating more than a few stairs, especially as puppies.
    • The Neapolitan Mastiff is an average shedder and requires weekly brushing, plus close attention to cleaning his skin wrinkles and folds.
    • He's an excellent deterrent to intruders, but rarely aggressive without cause. Socialize him early and often so that he learns how to behave around other people and animals.
    • Neapolitan Mastiffs can be lazy and will become obese if he doesn't get much exercise. Make sure your dog maintains a healthy weight to avoid diseases that can significantly reduce his life span.
    • The Neapolitan Mastiff is not recommended for a timid or first-time owner. This breed needs a confident trainer who is consistent and firm but also loving. The Neo is strong-willed and will test whether you really mean what you say.
    • Neapolitan Mastiffs have a fearsome appearance and a deep bark, both of which are usually more than enough to deter even the most foolhardy criminals.
    • Neapolitan Mastiffs have a number of what some consider offensive habits: slobbering, drooling, wheezing, grunting, snorting, and flatulence.
    • This affectionate dog is not aware of his size and will happily cuddle up to you or on you. [Note: We know of a Neo whose family puts up the Christmas tree at Halloween and doesn't take it down until February because he loves to lie around the tree, and they get the sofa to themselves for a few months.]
    • Neapolitan Mastiffs love the outdoors, but they also love being with their family. They should live indoors with their people, not alone in the backyard.
    • Young Neapolitan Mastiffs are rowdy, but it's important for their orthopedic development to prevent a lot of jumping or stair climbing until they reach physical maturity.
    • Neapolitan Mastiffs can be destructive if bored. Give them regular exercise, social interaction, and training to keep life interesting.
    • Neapolitan Mastiffs are good with older children, but can be too large for a toddler. They can knock over or step on small children without meaning to hurt them.
    • Never buy a Neapolitan Mastiff from a puppy mill, a pet store, or a breeder who doesn't provide health clearances or guarantees. Look for a reputable breeder who tests her breeding dogs to make sure they're free of genetic diseases that they might pass onto the puppies and who breeds for sound temperaments.
  • History

    Mastiff-type dogs have existed for millennia. The first mastiffs are thought to have been developed in Tibet, some 5,000 years ago. The massive dogs were used in battle and served as guards, both tasks for which they were well suited.

    The dog that became the Neapolitan Mastiff was developed in southern Italy, in the vicinity of Naples, from which he takes his name. The Neapolitan breeders focused on creating a dog who was massive in size with heavy, loose skin that would protect him in case of attack. They also wanted a dog who would be loyal and loving toward family members.

    The Neo, or mastino as he's also called, might have remained in obscurity in Italy but for the chance attendance at a Naples dog show in 1946 by journalist Piere Scanziana. He saw the Neapolitan Mastiff and recognized the breed for what it was: a living remnant of the Roman Empire, a descendant perhaps of the mastiffs of Epirus who accompanied Roman consul Paolo Emilio on his triumphant entry into the city after defeating Perseo of Macedonia.

    Scanziani took an interest in the breed and worked to make it become more well known. He was instrumental in writing the breed standard and in the Neo's recognition by Italy's national dog registry. The dogs were given the name Mastino Napoletano. One of Scanziani's dogs, Guaglione, became the first member of the breed to become an Italian champion.

    The breed was recognized by the international dog registry, the Federation Cynologique Internationale (FCI), in 1949. By the early 1970s the Neo had gained some popularity in Europe. The first Neo known in the United States was imported by Jane Pampalone in 1973, although Italian immigrants may have brought some of the dogs with them as early as the 1880s.

    The Neapolitan Mastiff Club of America (NMCA) was formed in 1973 and kept a registry of pedigrees, lineage, and ownership for the majority of American Neapolitan Mastiffs. The club's other function was to educate people about its well-loved breed.

    In the 1990s, the American Neapolitan Mastiff Association and the United States Neapolitan Mastiff Club were formed. The American Kennel Club recognized the breed in 2004. Today, the Neo ranks 112th among the 155 breeds and varieties registered by the AKC.

  • Size

    Male Neapolitan Mastiffs stand 26 to 31 inches at the shoulder and weigh 150 to 200 pounds. Females are 24 to 29 inches tall and weigh 120 to 175 pounds.
  • Personality

    Steady and solid as an oak tree, the Neo is a guardian rather than an attack dog. He's always alert and aware, even if it looks like he's relaxing.

    If you aren't home, they simply won't let anyone onto your property. And really, who's going to argue with them?

    When you welcome someone, though, your Neo will accept that person as well, although he'll probably remain aloof. This isn't a "hail fellow, well met" kind of dog.

    The Neo is affectionate toward his family, but he's also strong-willed — and big enough to have his own way. Begin training early, be firm and consistent, and use positive reinforcement techniques, such as praise and food rewards.

    As with every dog, Neapolitan Mastiffs need early socialization or exposure to many different people, sights, sounds, and experiences. Socialization helps ensure that your Neo puppy grows up to be a well-rounded dog.

  • Health

    Neapolitan Mastiffs are generally healthy, but like all breeds, they can be subject to certain health conditions. Not all Neos will get any or all of these diseases, but it's important to be aware of them if you're considering this breed.

    • Hip Dysplasia: This is a heritable condition in which the thighbone doesn't fit snugly into the hip joint. Some dogs show pain and lameness on one or both rear legs, but you may not notice any signs of discomfort in a dog with hip dysplasia. As the dog ages, arthritis can develop. X-ray screening for hip dysplasia is done by the Orthopedic Foundation for Animals or the University of Pennsylvania Hip Improvement Program (PennHIP). Dogs with hip dysplasia should not be bred. Hip dysplasia is hereditary, but it can be worsened by environmental factors, such as rapid growth from a high-calorie diet or injuries incurred from jumping or falling on slick floors.
    • Elbow Dysplasia: This is a heritable condition common to large-breed dogs. It's thought to be caused by different growth rates of the three bones that make up the dog's elbow, causing joint laxity. This can lead to painful lameness. Your vet may recommend surgery to correct the problem, or medication to control the pain.
    • Cardiomyopathy: This heart condition occurs when the heart muscle becomes very thin and is unable to contract normally. Because the heart must work harder, it becomes enlarged. Dogs with this disease have an abnormal heart rhythm and show signs of heart failure, including weakness, loss of appetite, weight loss, depression, collapse, difficulty breathing, a soft cough, and an enlarged abdomen. There is no cure, but rest, diet, and medication can help for a time.
    • Cherry Eye: This condition occurs when the gland located in the dog's third eyelid (known as the nictitating membrane) bulges out. It looks like a reddened mass at the inner corner of the eye. Cherry eye can be repaired surgically.
    • Cleft Palate: The palate is the roof of the mouth and separates the nasal and oral cavities. It is made up of two parts, hard and soft. A cleft palate has a slit that runs bilaterally or unilaterally and can range in size from a small hole to a large slit. A cleft palate can affect both the hard and soft palate separately and together and may cause a cleft lip. Puppies can be born with cleft palates, or a cleft palate can occur from an injury. Cleft palates are fairly common in dogs, but many puppies born with a cleft palate do not survive or are euthanized by the breeder. The only treatment for a cleft palate is surgery to close the hole, although not all dogs with a cleft palate require the surgery. It is important to get a diagnosis and treatment recommendation from your veterinarian.
    • Demodicosis: All dogs carry a little passenger called a demodex mite. The mother dog passes this mite to her pups in their first few days of life. The mite can't be passed to humans or other dogs; only the mother passes mites to her pups. Demodex mites live in hair follicles and usually don't cause any problems. If your Neo has a weakened or compromised immune system, however, he can develop demodectic mange.Demodectic mange, also called demodicosis, can be localized or generalized. In the localized form, patches of red, scaly skin with hair loss appears on the head, neck and forelegs. It's thought of as a puppy disease, and often clears up on its own. Even so, you should take your dog to the vet because it can turn into the generalized form of demodectic mange. Generalized demodectic mange covers the entire body and affects older puppies and young adult dogs. The dog develops patchy skin, bald spots, and skin infections all over the body. The American Academy of Veterinary Dermatology recommends neutering or spaying all dogs that develop generalized demodectic mange because there is a genetic link.
    • Fold Dermatitis: A skin infection caused by moisture trapped in the folds of the skin. The signs of fold dermatitis are redness, sores, and odor. The dog can be affected on the tail, face, lips, vulvar folds, or any other wrinkled area. Mild cases of fold dermatitis are usually treated with topical ointments or antibiotics, but severe cases may require surgical removal of the folds or amputation of the tail in the case of fold dermatitis on the tail. Keep your Neo's wrinkles clean and dry to prevent this problem.
    • Find a good breeder: If you're buying a puppy, find a good breeder who will show you health clearances for both your puppy's parents. Health clearances prove that a dog's been tested for and cleared of a particular condition.

    In Neos, you should expect to see health clearances from the Orthopedic Foundation for Animals for hips, elbows, and heart, as well as certification from the Canine Eye Registry Foundation (CERF) that the eyes are normal.

    Because some health problems don't appear until a dog reaches full maturity, health clearances aren't issued to dogs younger than two years old. Look for a breeder who doesn't breed her dogs until they're two or three years old.

  • Care

    The Neo is best suited to a home with a fenced yard. Although he's a homebody and not prone to wandering, a fence will help him to know the limits of his property, an important bit of knowledge for a guard dog.

    It's critical to understand your Neo puppy's physical limitations; exercise him in a controlled manner so his bones and joints don't undergo too much stress during the formative period.

    This means short periods of free running and play and short walks on leash only. Stairs are another hazard for the Neo puppy. He's clumsy and can easily fall and hurt himself. Carry him up and down the stairs for as long as possible, and try to restrain him from running on them.

    Avoid roughhousing or wrestling. You never want your adult Neo to think it's okay to play rough with you. It might have been cute when he was a puppy, but it can be dangerous once he's full-grown.

    Neapolitan Mastiffs don't make great jogging companions and are usually happiest when curled up on the couch. An adult Neo will benefit from a couple of short to moderate daily walks, however. He's sensitive to heat and humidity, so schedule walks for cool mornings and evenings, and be sure he always has a cool place to rest and plenty of fresh water.

    If you have a pool or spa, restrict your Neo's access to it unless you're there to supervise. This is a top-heavy dog who doesn't swim well and has difficulty keeping his head above water.

    Start training your Neo as soon as you bring him home, while he's still at a manageable size. Enroll in a puppy socialization class to accustom him to being around other dogs and people. This is extremely important for the Neapolitan Mastiff, who can be aggressive toward other dogs and people if he isn't taught manners.

    In addition to puppy kindergarten and regular obedience class, take your Neo to parks, outdoor shopping malls, and other places where he can learn to meet people and become accustomed to new experiences, sights, and sounds.

    The Neo is headstrong and needs a confident trainer. Use positive reinforcement techniques, never physical punishment, but be firm and consistent in what you ask of him.

    Think beyond puppyhood. If you don't want your Neo on the furniture when he weighs 200 pounds, don't let him on it when he only weighs 20 pounds. Once a habit is established, it will be difficult to break.

    Housetraining shouldn't be a problem as long as you make it a positive experience and provide your pup with a regular potty schedule and plenty of opportunities to go outside. Crate training is a wonderful tool for housetraining and keeping your young puppy from chewing things he shouldn't.

    The Neapolitan Mastiff needs a firm hand when training, but he also needs love and patience. When he's trained, you'll find that he's a wonderful, caring, and loyal companion who will gladly risk his life to defend yours.

  • Feeding

    Recommended daily amount: 4 to 6 or more cups of a high-quality dog food daily, divided into two meals.

    How much your adult dog eats depends on his size, age, build, metabolism, and activity level. Dogs are individuals, just like people, and they don't all need the same amount of food. It almost goes without saying that a highly active dog will need more than a couch potato dog.

    The quality of dog food you buy also makes a difference — the better the dog food, the further it will go toward nourishing your dog and the less of it you'll need to shake into your dog's bowl.

    Keep your Neo in good shape by measuring his food and feeding him twice a day rather than leaving food out all the time. If you're unsure whether he's overweight, give him the eye test and the hands-on test.

    First, look down at him. You should be able to see a waist. Then place your hands on his back, thumbs along the spine, with the fingers spread downward. You should be able to feel but not see his ribs without having to press hard. If you can't, he needs less food and more exercise.

    For more on feeding your Neapolitan Mastiff, see our guidelines for buying the right food, feeding your puppy, and feeding your adult dog.

  • Coat, Color and Grooming

    The Neo's face is made up of heavy, velvety wrinkles and folds that extend from the outside margin of the eyelids to the dewlap (the loose, pendulous skin under the throat and neck), and from under the lower lids to the outer edges of the lips. Cleaning and keep the wrinkles dry is an important part of grooming this breed.

    The body skin is thick and abundant. The short, dense coat is the same length and smoothness all over the body, with straight hairs that are no longer than one inch.

    The Neo has a coat that comes in solid gray, black, mahogany, and tawny or in tan brindle, in which the dog appears dark with tan stripes. A Neo with a white spot on the head is disqualified from the show ring, but it doesn't affect his ability to be a companion or guardian.

    The Neo sheds about as much as the average dog. Weekly brushing with a bristle brush or hound glove will keep his coat clean and free of loose or dead hair. Check the wrinkles to see if they need cleaning. Wipe them out with a damp cloth and then dry the skin inside the folds thoroughly. Bathe him as needed, and prepare to get wet when you do.

    Other grooming needs include dental hygiene and nail care. Brush your Neo's teeth at least two or three times a week to remove tartar buildup and the accompanying bacteria. Daily is better.

    Trim his nails once or twice a month, as needed. If you can hear the nail clicking on the floor, they're too long. Short nails keep the feet in good condition and won't scratch your legs when your Neo jumps up to greet you.

    Introduce your Neo to being brushed and examined when he's a puppy. Handle his paws frequently — dogs are touchy about their feet — and look inside his mouth and ears.

    Make grooming a positive experience filled with praise and rewards, and you'll lay the groundwork for easy veterinary exams and other handling when he's an adult, essential when you're dealing with a dog this size.

  • Children and other pets

    The Neo is suitable for families with older children, but he can be too big and clumsy to spend much time around toddlers. While he'll never intentionally hurt them, he can easily knock them over or step on them.

    Make it a rule that children are never to run and scream in a Neo's presence. The noise and activity can excite him, and he's simply too big to be allowed to chase children or play roughly with them.

    He may also feel the need to protect "his" children from other kids, especially if they're wrestling or otherwise appear to be fighting. Always supervise play so that he knows you're in charge.

    Always teach children how to approach and touch dogs, and always supervise any interactions between dogs and young children to prevent any biting or ear or tail pulling on the part of either party.

    Teach your child to never approach any dog while he's sleeping or eating or try to take the dog's food away. No dog, no matter how good-natured, should ever be left unsupervised with a child.

    The Neo is not fond of dogs he doesn't know, although he can learn to get along with those he's raised with. He can also get along with cats if he's raised with them.

  • Rescue Groups

    If you're interested in adopting an adult Neapolitan Mastiff who's already gone through the destructive puppy stage and may already be trained, a rescue group is a good place to start.

  • All Breed Characteristics

  • Adaptability

    Measures how well this breed potentially adapts to different environments

  • Trainability

    Measures the amount and difficulty of training potentially required for this breed

  • Health & Grooming

    Measures how much effort this breed potentially needs to keep a tidy hound and home

  • All-around friendliness

    Measures this breed's potential to get along with other dogs and humans

  • Exercise needs

    Measures this breed's potential to require lots of physical activity

  • Sometimes

    Adapt well to apartment living

    Contrary to popular belief, small size doesn't necessarily an apartment dog make -- plenty of small dogs are too high-energy and yappy for life in a high-rise. Being quiet, low energy, fairly calm indoors, and polite with the other residents, are all good qualities in an apartment dog.

  • Very

    Affectionate with family

    Some breeds are independent and aloof, even if they've been raised by the same person since puppyhood; others bond closely to one person and are indifferent to everyone else; and some shower the whole family with affection. Breed isn't the only factor that goes into affection levels; dogs who were raised inside a home with people around feel more comfortable with humans and bond more easily.

  • Moderate

    Amount of shedding

    If you're going to share your home with a dog, you'll need to deal with some level of dog hair on your clothes and in your house. However, shedding does vary greatly among the breeds: Some dogs shed year-round, some "blow" seasonally -- produce a snowstorm of loose hair -- some do both, and some shed hardly at all. If you're a neatnik you'll need to either pick a low-shedding breed, or relax your standards.

  • Rarely

    Dog friendly

    Friendliness toward dogs and friendliness toward humans are two completely different things. Some dogs may attack or try to dominate other dogs even if they're love-bugs with people; others would rather play than fight; and some will turn tail and run. Breed isn't the only factor; dogs who lived with their littermates and mother until at least 6 to 8 weeks of age, and who spent lots of time playing with other dogs during puppyhood, are more likely to have good canine social skills.

  • Very high

    Drooling potential

    Drool-prone dogs may drape ropes of slobber on your arm and leave big, wet spots on your clothes when they come over to say hello. If you've got a laid-back attitude toward slobber, fine; but if you're a neatnik, you may want to choose a dog that rates low in the drool department.

  • Not particularly

    Easy to groom

    Some breeds are brush-and-go dogs; others require regular bathing, clipping, and other grooming just to stay clean and healthy. Consider whether you have the time and patience for a dog that needs a lot of grooming, or the money to pay someone else to do it.

  • Somewhat

    Easy to train

    Easy to train dogs are more adept at forming an association between a prompt (such as the word "sit"), an action (sitting), and a consequence (getting a treat) very quickly. Other dogs need more time, patience, and repetition during training. Many breeds are intelligent but approach training with a "What's in it for me?" attitude, in which case you'll need to use rewards and games to teach them to want to comply with your requests.

  • Low

    Energy level

    High-energy dogs are always ready and waiting for action. Originally bred to perform a canine job of some sort, such as retrieving game for hunters or herding livestock, they have the stamina to put in a full workday. They need a significant amount of exercise and mental stimulation, and they're more likely to spend time jumping, playing, and investigating any new sights and smells. Low-energy dogs are the canine equivalent of a couch potato, content to doze the day away. When picking a breed, consider your own activity level and lifestyle, and think about whether you'll find a frisky, energetic dog invigorating or annoying.

  • Low

    Exercise needs

    Some breeds do fine with a slow evening stroll around the block. Others need daily, vigorous exercise -- especially those that were originally bred for physically demanding jobs, such as herding or hunting. Without enough exercise, these breeds may put on weight and vent their pent-up energy in ways you don't like, such as barking, chewing, and digging. Breeds that need a lot of exercise are good for outdoorsy, active people, or those interested in training their dog to compete in a high-energy dog sport, such as agility.

  • Rarely

    Friendly toward strangers

    Stranger-friendly dogs will greet guests with a wagging tail and a nuzzle; others are shy, indifferent, or even aggressive. However, no matter what the breed, a dog who was exposed to lots of different types, ages, sizes, and shapes of people as a puppy will respond better to strangers as an adult.

  • Not particularly good

    General health

    Due to poor breeding practices, some breeds are prone to certain genetic health problems, such as hip dysplasia. This doesn't mean that every dog of that breed will develop those diseases; it just means that they're at an increased risk. If you're buying a puppy, it's a good idea to find out which genetic illnesses are common to the breed you're interested in, so you can ask the breeder about the physical health of your potential pup's parents and other relatives.

  • Not usually

    Good for novice owners

    Some dogs are simply easier than others: they take to training better and are fairly easygoing. They're also resilient enough to bounce back from your mistakes or inconsistencies. Dogs who are highly sensitive, independent thinking, or assertive may be harder for a first-time owner to manage. You'll get your best match if you take your dog-owning experience into account as you choose your new pooch.

  • Medium

    Intelligence

    Dogs who were bred for jobs that require decision making, intelligence, and concentration, such as herding livestock, need to exercise their brains, just as dogs who were bred to run all day need to exercise their bodies. If they don't get the mental stimulation they need, they'll make their own work -- usually with projects you won't like, such as digging and chewing. Obedience training and interactive dog toys are good ways to give a dog a brain workout, as are dog sports and careers, such as agility and search and rescue.

  • Moderate

    Intensity

    A vigorous dog may or may not be high-energy, but everything he does, he does with vigor: he strains on the leash (until you train him not to), tries to plow through obstacles, and even eats and drinks with great big gulps. These dynamos need lots of training to learn good manners, and may not be the best fit for a home with young kids or someone who's elderly or frail. A low-vigor dog, on the other hand, has a more subdued approach to life.

  • Sometimes

    Kid friendly

    Being gentle with children, sturdy enough to handle the heavy-handed pets and hugs they can dish out, and having a blasé attitude toward running, screaming children are all traits that make a kid-friendly dog. You may be surprised by who's on that list: Fierce-looking Boxers are considered good with children, as are American Staffordshire Terriers (aka pit bulls). Small, delicate, and potentially snappy dogs such as Chihuahuas aren't so family-friendly.

    **All dogs are individuals. Our ratings are generalizations, and they're not a guarantee of how any breed or individual dog will behave. Dogs from any breed can be good with children based on their past experiences, training on how to get along with kids, and personality. No matter what the breed or breed type, all dogs have strong jaws, sharp pointy teeth, and may bite in stressful circumstances. Young children and dogs of any breed should always be supervised by an adult and never left alone together, period.

  • High

    Potential for mouthiness

    Common in most breeds during puppyhood and in retriever breeds at all ages, mouthiness means a tendency to nip, chew, and play-bite (a soft, fairly painless bite that doesn't puncture the skin). Mouthy dogs are more likely to use their mouths to hold or "herd" their human family members, and they need training to learn that it's fine to gnaw on chew toys, but not on people. Mouthy breeds tend to really enjoy a game of fetch, as well as a good chew on a chew toy that's been stuffed with kibble and treats.

  • Moderate

    Potential for playfulness

    Some dogs are perpetual puppies -- always begging for a game -- while others are more serious and sedate. Although a playful pup sounds endearing, consider how many games of fetch or tag you want to play each day, and whether you have kids or other dogs who can stand in as playmates for the dog.

  • High

    Potential for weight gain

    Some breeds have hearty appetites and tend to put on weight easily. As in humans, being overweight can cause health problems in dogs. If you pick a breed that's prone to packing on pounds, you'll need to limit treats, make sure he gets enough exercise, and measure out his daily kibble in regular meals rather than leaving food out all the time.

  • Low

    Prey drive

    Dogs that were bred to hunt, such as terriers, have an inborn desire to chase and sometimes kill other animals. Anything whizzing by -- cats, squirrels, perhaps even cars -- can trigger that instinct. Dogs that like to chase need to be leashed or kept in a fenced area when outdoors, and you'll need a high, secure fence in your yard. These breeds generally aren't a good fit for homes with smaller pets that can look like prey, such as cats, hamsters, or small dogs. Breeds that were originally used for bird hunting, on the other hand, generally won't chase, but you'll probably have a hard time getting their attention when there are birds flying by.

  • Moderate

    Sensitivity level

    Some dogs will let a stern reprimand roll off their backs, while others take even a dirty look to heart. Low-sensitivity dogs, also called "easygoing," "tolerant," "resilient," and even "thick-skinned," can better handle a noisy, chaotic household, a louder or more assertive owner, and an inconsistent or variable routine. Do you have young kids, throw lots of dinner parties, play in a garage band, or lead a hectic life? Go with a low-sensitivity dog.

  • Extra Large

    Size

    Dogs come in all sizes, from the world's smallest pooch, the Chihuahua, to the towering Great Dane, how much space a dog takes up is a key factor in deciding if he is compatible with you and your living space.

  • Low

    Tendency to bark or howl

    Some breeds sound off more often than others. When choosing a breed, think about how the dog vocalizes — with barks or howls — and how often. If you're considering a hound, would you find their trademark howls musical or maddening? If you're considering a watchdog, will a city full of suspicious "strangers" put him on permanent alert? Will the local wildlife literally drive your dog wild? Do you live in housing with noise restrictions? Do you have neighbors nearby?

  • Not particularly well

    Tolerates being alone

    Some breeds bond very closely with their family and are more prone to worry or even panic when left alone by their owner. An anxious dog can be very destructive, barking, whining, chewing, and otherwise causing mayhem. These breeds do best when a family member is home during the day or if you can take the dog to work.

  • Not so well

    Tolerates cold weather

    Breeds with very short coats and little or no undercoat or body fat, such as Greyhounds, are vulnerable to the cold. Dogs with a low cold tolerance need to live inside in cool climates and should have a jacket or sweater for chilly walks.

  • Very poorly

    Tolerates hot weather

    Dogs with thick, double coats are more vulnerable to overheating. So are breeds with short noses, like Bulldogs or Pugs, since they can't pant as well to cool themselves off. If you want a heat-sensitive breed, the dog will need to stay indoors with you on warm or humid days, and you'll need to be extra cautious about exercising your dog in the heat.

  • Very low

    Wanderlust potential

    Some breeds are more free-spirited than others. Nordic dogs such as Siberian Huskies were bred to range long distances, and given the chance, they'll take off after anything that catches their interest. And many hounds simply must follow their noses, or that bunny that just ran across the path, even if it means leaving you behind.

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