I have a female rat that has started biting. I was not the original owner. The original owner brought her to school when she was about to have her babies so the class could see them. Well, she started biting when anyone reached into the cage. I understand she was protecting her babies. But now she seems to be biting quite a bit and it hurts! Can I break her of this habit or should I just start wearing leather gloves! We are not taking her back to school. This seems to have really upset her. I have her at my house and she can stay, unless she doesn't stop biting me.