I have a soon to be 3 year old male Chinese crested and he likes to lick himself until he's all the way out. Then it dries and I have a heck of a time putting it away. Is their any reason for this behavior? How do I stop this action. I'm afraid that ...

I have a almost 1 year old female Chinese crested and since she has had her first heat cycle, I have noticed that it appears that she is sucking on her own nipples. Is that normal? And how would I break her of this?