Well, I found an add for a male rat on craigs list, and decided that I'm going to get him. The lady who has him now rescued him a few weeks ago from a friend who was keeping him alone, in a ten gallon tank in their garage. I was told they also had a drug problem. He's been seen by a vet and is healthy (I'm still doing quarantine, so no worries!), and she says he's friendly. Anyone have any advice on issues he may have? He's just over a year old. I'm just trying to make sure that I'm thinking of everything. I want whats best for the ratties.