Hi, recently introduced two rats to a lone rat. They are fine with each other and fine out of the cage. However, my new adoption rat Burty has turned to biting me when I'm in the cage. My other PEW cant see very well and will clasp around my finger to see if its food but doesn't sink teeth in. However Burty a red eyed cream rat is drawing blood every time, and its a pain as I'm covered and it takes over half an hour stop the bleeding. Every time he does it I tap his nose and say 'no'. But I'm not sure this will help. Hes lovely outside of the cage but in the cage he bites. I font think this is a food thing or sight thing as I always announce my presence. Any tips or suggestions will be greatly appreciated. Sorry if a topic like this has already been answered. Please redirect me if it has.