When my sister was my age, she used to have a bunch of hamsters. Not all at once, she would always get a new one.
What would happen, is that she had one of those little balls for it to roll around in. She would always leave it in it's ball, and go to school. When she came back, the friggen thing would be stuck underneath the radiator, trapped in the ball - dead. This happened a number of times until she decided it wasn't a good idea to get hamsters anymore.
Funniest god damn story my mom has ever told me.