I got a robo dwarf hamster, Houdini, a few days ago. He was fine on the first day but now I'm a little worried about him. A lot of things I've read online say that robos should live in pairs. I'm afraid he's depressed or lonely. He eats okay and everything but he's asleep a lot. Also, I haven't really seen him drink water more than twice. I'm sure he does when I'm not paying attention or something but the bottle is still almost where it was when I filled it up. I think I'm going to get him a little friend but in the meantime, I'm not sure what to do. Any suggestions?