Do Rats Need a Wheel?

Rats generally enjoy running on an exercise wheel, which keeps them healthy and satisfies their need for physical activity. Don't give yours any old rodent wheel, though. ... He needs a wheel with a solid surface, or else his tail can get caught between the bars while he's running -- and that wouldn't be fun for anyone.

Are wheels bad for rats?

Wheels are not necessary for rats, but they can provide a good source of exercise during the long hours they are confined to their cage. Yet pet owners are divided - some believe that wheels are perfectly healthy for rats, while others insist that they will damage their spines and tails.

How big of a wheel do rats need?

In short, a small rat needs a wheel that is 11 inches in diameter, a medium-sized rat needs a wheel that is 12 inches in diameter, and a large-sized rat needs a wheel that is at least 15 inches in diameter.