Rabbits don't bite their nails, but they do scratch them with their back feet in order to keep them short. This is why it's important to provide your rabbit with a good scratching post. If you don't have a scratching post available, your bunny may resort to scratching furniture or other surfaces in your home, which can lead to damage and/or injury. So if you're looking for a way to help keep your rabbit's nails trimmed down, be sure to provide them with a good scratching post.