sphynx

I used to raise the Russian dwarf hampsters, and they will do fairly well with another in the cage provided that the cage is big enough, and that they are male and female or male and male, the females just don't get along. This is not to say that all of them will tollerate a cage mate, but they do fair much better than the teddybear ones. If you get two from the same litter, they will more than likely be ok together, because they are used to each other. But Hampsters in general are fairly solitary, so keeping one by itself, won't do it any harm. I like those lil guys.

I like rats too, if get a young one, and it will not only tame easily, they become quite attached to you. Much more so than any hampster or mouse would. They do smell a bit more than hampsters, but not nearly as much as mice. And they're fairly smart too. I used to teach mine tricks! Well "tricks" at anyrate.

I would avoid mice. They never get terrribly friendly, are always prone to biting, and smell much much worse than hampsters. I also never had any luck with teddybear hampsters. I think if you get them young they're better, but every one of the ones I had bit me.