You can't hide anything in a dorm. They used to do room checks at mine and one time they found a candle and confiscated it. The wick had never even been burned. Plus, if you and your roommate have a falling out over who ate that ramen...and you will...guess what ammunition they have against you??
In addition to all of that, college is fun! Go make friends, take roadtrips, take too many hours, learn lots of stuff, work crazy hours...you'll be too busy to take care of them anyway! A good kind of busy!
You can totally live without pets. You'll be a different person when you graduate anyway. You might be interested in something completely different by then.