My roommate last year had a chinchilla that chewed up all my stuff. Covers off my textbooks, the cable for my laptop, other cables, kids' homework (I was a grader for one of the math sections) - ANYTHING I left out.

Plus, she let it run around all over all the time, and they take baths in sand/dust, so there was sand/dust all over everything, and it would just poop all over and she'd never vacuum up after it.

Ugh, nightmare. She and I didn't get along very well while we were living together.