The first rule of solving any behavioral problem is to make sure it's not a medical problem. The cat who won't use the litter box may be struggling with an infection that makes urination painful. A dog who snaps when his ears are touched may be suffering from chronic infections. Situations such as these need to be accurately diagnosed and completely treated with the help of your veterinarian before any retraining begins.

When your pet is healthy, your veterinarian can still be of use. While few veterinarians have the training or knowledge to help solve behavior problems, the numbers of those who do are growing -- and your vet may be one of them. Even those veterinarians who have no interest in behavior work can refer you to someone who can help. Loosely grouped under the term "behaviorist," these specialists can help fix what ails the relationship you have with your pet.

Consulting a behaviorist can save you time, money and aggravation. Time, since someone with experience in animal behavior can quickly determine the root of the problem, without the emotional baggage that a pet owner may bring to the situation. Money, since a consultation or two is a great deal cheaper than a new sofa. And aggravation? You'll understand that one if you're living with a problem pet.