Rabbits may have a surprising source of calcium — eating their own teeth
Rabbits' teeth grow continuously, and bunnies wear them down by munching fiber-rich foods. Scientists suggest rabbits recycle a fine powder resulting from this constant grinding to fuel tooth growth.
![Rabbits may have a surprising source of calcium — eating their own teeth](https://cdn.mos.cms.futurecdn.net/YUMcpJodYV9xA3Fv6CRr2i.jpg?#)