FAQ: Wheels for small pets

A slightly rough or finely ridged surface helps the animal avoid slipping while running. Very slippery plastic can be uncomfortable, while grooves that are too coarse collect dirt and get in the way of the feet.

If a wheel is stiff or jerky, the hamster tires quickly or stops using it altogether. Before buying or installing a wheel, try turning it by hand: a good wheel spins smoothly without jerking.

Wheels sold with cages are often too small or barred, especially for Syrian hamsters and gerbils. Check the wheel’s diameter and surface, and if it is unsuitable, it is better to buy a properly sized wheel separately.

Not always: a 28–30 cm wheel needs a cage tall enough that the wheel does not press against the roof or bars. Before buying, measure the cage’s inside height and leave room for a layer of bedding under the wheel.

Yes, there are wheels with bearings or another quiet axle mechanism that are almost inaudible at night. Quietness also depends on whether the wheel stands steadily and does not touch the cage bars or bedding.

Squeaking is usually caused by dirt or bedding built up in the axle, or by a worn bearing. Remove the wheel, clean the axle and check the mounting, and if the squeak persists, it is better to replace the wheel.

Machine oil, spray lubricants and other technical products must not be used, because the animal may lick or chew them. Follow the manufacturer’s instructions, and if the wheel still squeaks, replace it with a quieter one.

Rattling is often caused by a wheel that touches the bars, a wobbly stand or a wheel knocking against the cage wall. Mount the wheel more firmly, move it away from the walls and check that the base under it is level.

Choose a wheel with a quiet bearing, place it on a firm, level base and do not let it touch parts of the cage. The cage can stand on a soft mat to reduce vibration, but the hamster will still be active at night.

It is not recommended, because hamsters are most active at night and the wheel is an important source of exercise for them. It is better to choose a quieter wheel or to move the cage to another room.

Usually yes, because the bearing reduces friction and the wheel turns more smoothly. Still, the bearing must be protected from bedding, urine and dust, because once dirty it can also start to hum or squeak.

Some sensitive animals can be startled by a loudly rattling or squeaking wheel and use it less. A quiet, stable wheel is more comfortable not only for the owner but for the animal too.

Usually the wheel spins too freely, is too small, slippery or wobbly. Large, stable wheels with a grippy surface reduce the risk of falling out and getting hurt.

It can, if the wheel is barred, too small, has gaps near the axle or a cross support. A safe wheel has a solid surface, the right size, no sharp edges and is firmly fixed.

Yes, a gerbil’s tail skin can slip off or the tail can be injured if it gets trapped between bars or between the wheel and a support. That is why gerbils should only have solid wheels mounted on one side, and an injury needs a vet.

Look at where the wheel joins the axle and stand: the gap between the wheel’s edge and the support must not be large enough for a leg or tail to fit. Also check the plastic edges for sharp or chewed spots.

A wheel should be replaced when it develops sharp edges, holes or cracks, or when it starts to wobble. Chewed-off plastic can cause injury or be swallowed, so it is better to replace a chewed wheel with a sturdier one.

Gerbils, mice or degus that live together sometimes run together, but one may knock or throw the other out. If the animals are large or often squabble, it is better to fit two wheels or one bigger wheel.

Mice, gerbils or degus living in a group benefit from more than one wheel, so there are fewer disputes over it. It also matters that enough space is left in the cage for other activities.

No, adult Syrian hamsters are solitary and must live alone, because they often fight when kept together. Each Syrian hamster needs its own cage and its own wheel of the right size.