Quote Originally Posted by Isis View Post
Yeah that's the sad thing about them My sister has a blue hooded hairless, beautiful blue skin! But she's a year old now and has been having a lot of tumors comming to the surface and rupturing. My little sis puts some meds on it and she's fine for the next month till it all happens again. It's weird. She's a fantastic rat though!
I don't think those are tumors, tumors shouldnt come to the surface, rupture open and go away. That's an infection like a cyst or absess full of pus.

Rats do have short life spans, only about 2-3 years. Their reproductive lives are short (only about 15 months of age or so), before they reach menopause.