I got a rat at the store today as a feeder it's too large to feed. I'm keeping it over night (or possibly forever if my roomy continues to fall in love with it. -lol-) and I haven't seen him eat any of the seeds I've given him. I don't know the age of the rat, but here's a picture. It's young. Does it still need to be given milk or anything like that? I know NOTHING about rats and I want it to be happy for the night (or, again, possibly forever.)
Please let me know what I should be doing for him.
Help asap would be great since if he DOES need something other than hard food, I don't know how long he's been without.