How we raise, train and socialize our dogs has a huge impact on how they behave. All dogs, regardless of breed, have the potential to be well-behaved, and pleasant to live with. Getting a dog there may be more difficult with some than with others, depending on their natural tendencies. For example, labrador retrievers have the potential to be wonderful family dogs. However they have a HUGE amount of energy when they're young, and if not strenuously exercised on a regular basis they tend to be nudgy, nervous, clumsy, and generally a pain in the neck to their owners.
So when does a dog's behavior become a problem?