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09/04/2013 01:13 pm ET

Kittens In Hamster Balls Get Tumblin' (VIDEO)

We all know that cats love boxes, but what about hamster balls? Judging from this video, kittens love them! After completing their core vaccinations, these 11-week-old kittens, Muffin, Bun Bun and Ducky, were rewarded with the plastic globes, and they couldn't cuddle in and roll around enough.

Why do cats love small spaces like boxes and hamster balls? Watch a scientist explain here.

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