Well, one little one didn't make it : ( I'm not sure exactly what went wrong, but when I took him out to feed him, he was acting strange... the next morning I woke up to find him pushed outside the nest, stiff. The good news though is that the other guy is doing well! I've caught him nibbling on lab blocks and his eyes are open now. "Mama" rat is very nervous and protective, and ever since we lost the first guy, I've stopped bugging her so much, and haven't even taken him out in 2 days. I've soaked the lab blocks in the kitten milk, and filled a small water bowl that I hope he can reach. I'm not sure exactly how she's keeping him so healthy, but she is!