 This is a new behavior. All of it. The veterinarian says Oreo is in good health. Can I do anything to change his behavior? From Wally in Kentucky. Thank you for your email. I understand the frustration, but understand Oreo's frustration here. Oreo, there's a big change. And, you know, when I ask veterinarians, I'm speaking at a veterinary conference. What do cats dislike more than anything else?