Hamsters are naturally active animals and require a lot of exercise or they will soon get bored. Bored hamsters are not fun! They can chew on the cage and destroy items in their cage and become quite difficult to handle. They also may become lethargic, irritable, and destructive.
Exercise can take place in many forms and the hamster wheel is an ideal way for them to run and expend energy. The Unipet Hamster Wheel is a solid plastic wheel (safer for small toes) that rests on a stand or can be attached to the side of a wire cage. It is 140 mm high when mounted on the plastic stand. The actual wheel has a diameter of about 137 mm is and 60 mm wide.