Because London is almost 5 mos old and I need to know this....I know she will have one before she get's fixed because she's so small that I'm scared to have her fixed anytime soon. Also Teddy is almost 8 mos old. He is not neutured yet . I plan to neuter him but maybe in a month. He has never humped anything or anyone and he hasn't had the lipstick. Do you think it's a problem being that she is so tiny around him if she were to go in heat? He has never humped her or anything like that. They act very much like brother and sister. Please someone respond. Thank you