Or get a place off campus? They give more leeway. I wouldn't keep it in your dorm unless you had absolutely no choice--I do know in state/city colleges the room inspections can only be in open space and visible areas i.e. they can't look under things/in things but I don't know about private colleges.

People are afraid of reptiles, not to mention ball poop/pee usually stinks--things like fish don't affect your roommates, but anything bigger can. Good luck!