Conversely, treating the underlying medical condition often resolves the "behavior problem" without any direct behavioral intervention. Resolving the UTI stops the inappropriate urination. Managing hyperthyroidism with methimazole restores the cat’s normal temperament. Pain control for arthritic dogs can transform a withdrawn, irritable pet back into a tail-wagging companion. The modern veterinarian knows that the most effective behaviorist is often a good internist.