Is it considered cruel to spay a cat? This morning my cat started acting completely differently then she normally does. She will not stop whining. She digs into the carpet with her claws and pulls herself forward to brush herself on the carpet, then does this in circles all around the living room. When I pet her she sticks her butt into the air. I think she's in heat. She has never been to the vet before and she is about 2 years old. I'm afraid that it would be cruel or painful to the cat to have her fixed. She's an indoor cat so I don't think she will be impregnated.