How does a cat act if she is in heat? Ebony has been rubbing on everything in sight and quite vocal. The other boys are quite interested in her rear end- more than normal. Is that typical behavior for a cat in heat? I have her locked up in the bathroom- I was worried a fight might break out between the boys over her if she is in heat. She goes to the Dr. on Monday to be spayed. Is it neccessary to lock her up? Is there anything else I should know or be warned about? Never had a cat this old not be fixed!