A leashed walk around the block is usually a sufficient bathroom break, but it isn't enough exercise for most dogs. The majority need 30 to 60 minutes a day to stay in good shape. For some pups, this means off-leash, full-out running to burn off steam; some dogs enjoy a good long walk; others want to go play fetch in a lake. Whatever form of exercise your dog likes the most, he'll be healthier for indulging in it.

A dog's mind needs exercise as much as his body does--the same "use it or lose it" philosophy applies to us all. Training is a mainstay of canine brain workouts. It could be as simple as playing games with you and learning to sit, or as complex as training for agility or obedience competitions.

And whether it's through playing, training, hiking, or petting, your dog needs a substantial daily dose of attention from you.

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