We "rescued" Mooch from an owner who was moving and Mooch could not go with. We were assured that she was already spayed.
She has, on several occssions, now, exhibited all signs of being in heat (rubbing against objects, presenting herself to our confused boxer, and other flirtacious behavior) except spraying. I have not detected any odor anywhere. She is an indoor cat, and I have yet to get her to the vet to be checked. Our male cat is nuetered, and spends a lot of time outdoors. He seems annoyed at Mooch's advances, but is otherwise non-agressive. Any other time, they get along well, and play often.
Could the change of seasons/location (tiny urban apartment to a large subrban home with plenty of opened, screened windows) have anything to do with it?
Is it possible that she still experiences the hormonal changes, yet is incapable of conception? Is it possible that she isn't spraying because she doesn't have the instinct to do so?
Obviously, I need to get her to the vet for her boosters. At that time, can the vet tell if she's been spayed?