Well, it also depends on whether big fish tanks or animals like ferrets are allowed--and how much time you have to maintain their cages, meals, etc. College is just such a busy time, and when it's over are you taking the poor baby with you or not? It's your baby for good, not just a support object.
I had fish that lived for 7 years, a "fancy" fawn-colored pet mouse who lived for 4 years, and then 5 dwarf rabbits, but then I also had a good rental where they were allowed and plenty of room for my rabbits' big cages, etc. I also had a husband who helped with the cleaning. We had a bit of spare money for vet care. All of our rabbits were fixed and one did have to go to the vet once for sub-q IV fluids to save its life. Even our little mouse had a boil or something on his poor tail and we had him to a vet to get it lanced and medicated. You have to consider your budget. Their food, care, everything.
Our rabbits were ours for keeps--not throwaway disposable pets. They were never let loose outside like some inhumane foolish people do to run loose and get lost or run over. They were let out in a big rabbit-proofed room for a few hours a day to hop around. They could go out to get fresh air, supervised, in their transportable cages. They used litterboxes and were very human oriented, knew some tricks etc. BUT most people are terribly irresponsible with rabbits, and undereducated about them. Most pet stores no longer sell them where I live, if any.
Another thing to consider: in college you are often going home during breaks and summers--who will be watching the pet?