Proper ventilation, surface material, and size are primary concerns when searching for a rabbit cage. Rabbits need to feel comfortable and safe in their habitat.

Wired Cages

For wired cages, make sure that they aren't coated in plastic, as your rabbit may chew on the wires. Also, if the cage is painted, check to to make sure that it is nontoxic. Ideally, the gaps in between the wires should be no more than 0.5 inches so that a paw won't get caught in between. If you are keeping a baby rabbit in the cage, wrap a cloth or screen around it. Finally, be aware of any possible sharp edges on the wires or bars.

Entering and Exiting 

If the cage has a door on the side, make sure that it opens sideways, rather than up and down (which would form a ramp). This way, your rabbit won't get its paw stuck on it while entering the cage.

A cage with a top opening makes it easier to clean, and is more accesible which allows you to put your rabbit in or take your rabbit out. The opening should also be large enough to place a litter box through it.

Surfaces

It is recommended that the cage have a solid surface, so that your rabbit can have a more comfortable area to lie down or walk around on. Cages with plastic or metal bottoms are ideal. It is important to note that wired surfaces can potential cause a rabbit to get hock sores. The alternative solution for such cages is to place a piece of cardboard or heavy newspaper that fully covers the main surface.