Hello I'm new to this forum. I really hope this is in the right place. I've had my two girls for a little over two weeks now and about three days ago they developed a strange biting habit. Both of my girls have taken to biting my ears! Or maybe its just one, its hard to tell when they're both black hooded and on/around my shoulder. I'm really not sure why they're doing this. They are a little skittish but they still seem to like me. They want to climb on my non stop and chatter and seem fairly happy. I've even gotten a few licks before from one of the girls. They only bite my ears. No where else. They want so badly to climb up on my shoulder but I haven't been letting them because of this. These bites aren't gentle either. The first time was actually multiple bites on both the lobe and INSIDE my ear that resulted in blood all through my hair and everywhere else. The second time wasn't as bad but still drew blood... Any ideas on why this is happening? They are petstore rats. Could it just be the bad "petstore temperament"? Could they be sick? They do sneeze but it hasn't been enough to prompt me to seek a vet visit, and they show no other symptoms. I also used to wear earrings, which they liked to tug on, but I stopped wearing them since the tugging was uncomfortable. Could they be upset my earrings are gone? My earrings also left a tarnish mark which I still haven't managed to get off. Could that have upset them? I'm really out of ideas. Are these the kind of girls that I just can't allow on my shoulder at all?