Biting and marking. We were totally frustrated — at the end of our rope. Didn’t know whether we could continue to keep our cat, even though he had been with us for 10 years. His issues are now managed, and we are a lot more knowledgeable about how to interact with him in ways that relieve his anxiety, alleviate most of the negative behaviors, and restored peace to the household. Although having a therapist for the cat sounds crazy, it works. Make no mistake; the “therapy” is more for the owners than the cat. But it brings a new level of understanding and restores the feeling of control for both cat and owners.