Elderly Armadillo Goes for Spin on Exercise Wheel A 21-year-old armadillo at a zoo in Tacoma, Washington, got his workout in when he ran on his exercise wheel. Adorable video posted by the Point ...

Caged mice aren't the only animals that enjoy a spin on the old exercise wheel. New video footage reveals wild mice, rats, and even frogs and slugs like running (or crawling) on wheels, too. These ...