When I was little, my sister had a hamster. She had one of these balls. It came off the stand, and the hamster would roll everywhere. it's good exercise, I thought it was cool. It was better then just watching it in a cage.

Pros: good

Cons: none

When I take out the ball, my hamster comes out and jumps right in... she loves it! The only negative is that the plastic gets scratched up after a while. But, she doesn't mind.

Pros: Light-weight

Cons: Gets scratched

My guinea pig used to love running in this ball. It kept her entertained for long periods of time. Great product!

Pros: lets your pet run!

Cons: urine and feces can make this ball messy...

This was really fun to watch. Our Hamsters loved it and even our cat seemed to like watching the hammies in it.

Pros: ----

Cons: ----

OMG...my hamster LOVED his ball when I was growing up. He'd spend hours in it cruising around the house.

Pros: Entertaining, great exercise

Cons: None