i would go with a hampster. ive had two, dusty and mc hampster h:. they're pretty cool, but they're teeth do get sharp as hell, it bit right through my cousin's finger. those balls are really fun to watch them roll around in, and you can build them wild tunnels and shit. they are kind of a pain in the ass to catch if they get out though. i always used to build stairs out of books up to a trash can and leave a trail of food. the idiots walk up the stairs and fall in the thing and cant climb out :chuckles: