I have two rats, shirley and charlotte. they live in a nice big cage with lots of toys and and are handled daily by me. well, today I reached in the cage to make sure charlotte was ok as she wasn't coming out of the back corner of her cage. as I had my hand about 5-6 inches away from her I talked calmly and showed her a treat to coax her, and then she jumped up and bit me hard ! She hasn't bitten me for like 7-8 months (she bit when I first got her) and I was so surprised! she really broke the skin pretty bad but I washed it out a few times with antibacterial stuff. I'm trying to think of reasons for why she bit me, and the only one I can come up with is that we are rat-sitting 3 female rats, but they are in completely different parts of the house and I always wash my hands after handling them so my rats won't get sick and so my rats won't be able to tell they're here. So, does anybody have any reasons for me why she bit me and can anybody give me some tips so I can prevent this? Thanks!