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

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 has been tested for and cleared of a particular condition.

In Border Collies, you should expect to see health clearances from the Orthopedic Foundation for Animals (OFA) for hip dysplasia (with a score of fair or better), elbow dysplasia, hypothyroidism, and von Willebrand's disease; from Auburn University for thrombopathia; and from the Canine Eye Registry Foundation (CERF) certifying that eyes are normal. You can confirm health clearances by checking the OFA web site (offa.org).

• Hip Dysplasia: This is an inherited 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 others don't display outward signs of discomfort. (X-ray screening is the most certain way to diagnose the problem.) Either way, arthritis can develop as the dog ages. Dogs with hip dysplasia should not be bred--so if you're buying a puppy, ask the breeder for proof that the parents have been tested for hip dysplasia and are free of problems.
• Progressive Retinal Atrophy (PRA): This is a family of eye diseases that involves the gradual deterioration of the retina. Early in the disease, affected dogs become night-blind; they lose sight during the day as the disease progresses. Many affected dogs adapt well to their limited or lost vision, as long as their surroundings remain the same.
• Epilepsy: This is a neurological condition that's often, but not always, inherited. Epilepsy can cause mild or severe seizures that may show themselves as unusual behavior (such as running frantically as if being chased, staggering, or hiding) or even by falling down, limbs rigid, and losing consciousness. Seizures are frightening to watch, but the long-term prognosis for dogs with idiopathic epilepsy is generally very good. It's important to take your dog to the vet for proper diagnosis (especially since seizures can have other causes) and treatment.
• Collie Eye Anomaly: This is an inherited condition that causes changes and abnormalities in the eye, which can sometimes lead to blindness. These changes can include choroidal hypoplasia (an abnormal development of the choroids), coloboma (a defect in the optic disc), staphyloma (a thinning of the sclera), and retinal detachment. Collie eye anomaly usually occurs by the time the dog is two years old. There is no treatment for the condition.
• Allergies: There are three main types of allergies in dogs: food allergies, which are treated by eliminating certain foods from the dog's diet; contact allergies, which are caused by a reaction to a topical substance such as bedding, flea powders, dog shampoos, and other chemicals; and inhalant allergies, which are caused by airborne allergens such as pollen, dust, and mildew. Treatment varies according to the cause and may include dietary restrictions, medications, and environmental changes.
• Osteochondrosis Dissecans (OCD): This orthopedic condition, caused by improper growth of cartilage in the joints, usually occurs in the elbows, but it has been seen in the shoulders as well. It causes a painful stiffening of the joint, to the point that the dog is unable to bend his elbow. It can be detected in dogs as early as four to nine months of age. Overfeeding of "growth formula" puppy foods or high-protein foods may contribute to its development.

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