Yikes! I'm glad to hear that you made an appointment. If everything comes out ok, meaning...no health issues...then we'll have to try and figure out why he would be displaying this behavior. Has anything changed recently in your home? Was another animal added? If your cat fixed? These will be some of the things to think about if there are no health problems.

Let us know how the appointment goes! I hope everything's ok!
**hugs**
Karen