
I have a bitch who had her first season back in April -she bled for ONE day only (about 10 days in), but clearly was in season as she was standing, and indeed mated and tied with my neutered boy. I wouldn't even have known she was in season had she not started flagging! Asking around quite a few people have had similar experiences, some bitches have gone on to have normal seasons later -even those that have had normal ones before.