abby, who isn't spayed yet, was in heat. joey, who is neutered, suddenly became "interested" and was starting to beg abby for "some." she was in heat for about 2 to 3 weeks before he starting begging, but that day he suddenly noticed her. she had a very clear, direct way of telling joey "no!" haha.. don't worry.. they're bf and gf and play fight all the time.