If there's one thing dogs and humans have in common, it's that you won't find a member of either group who's perfect. And think about it: you wouldn't want to. Consider your favorite people -- part of what renders them so endearing are their quirks, complexities, and funny habits. The same goes for your pets; their idiosyncrasies are what make them lovable and unique.

That said, you do want your dog to be a well-behaved, self-assured, and respectful member of the family. Setting expectations and establishing clear communication helps ensure a truly happy coexistence.

Many canine misbehaviors are born out of instinct, and most arise from either boredom or stress. Aggressive behavior, chasing, marking, and resource guarding are modern manifestations of dogs' early instincts to acquire food and protect their territory and pack. Digging and chewing, on the other hand, are usually the results of boredom. Barking is a little of both. Jumping up and mouthing are simply examples of one species (dogs) attempting to make a connection using very different  [Continued]