As far as the biting goes, both of mine will never hurt me, they just put their teeth around my finger as a warning, and it's enough to know I'm doing something they don't like. Chong, even after a year still does not like me touching me and will 'bite' me every time I try to tickle him. Cheech loves all attention so I know something is different if I can't tickle her tummy.
Blowing has no affect at all, in fact, because they don't like it they just bite me again to tell me how much they didn't like me blowing. I just used the tactic of yelping as if I was in pain when they bit too hard and they learned very quickly. I don't mind then doing if it doesn't hurt because as they can't speak I just think of it as a way they communicate with me.
Cheech has one BIG attitude. I can't wait to find out what their baby(ies) is like.
I just let them out and managed to get a video of Chong climbing up behind the cage and kissing Cheech through the bars so I'll post that up when I get time. I can't believe how loving they are when they used to hate each other. They even take treats out of each other's mouths! I couldn't wrestle a treat of either one of them and I'm about fourty times their size.