Beavers and Other Rodents is another great book to check out at your library. It has beautiful detailed pictures of beavers, flying squirrels, porcupines, mice, lemmings, voles, and capybaras.
The text is easy to read and understand. It explains a rodent as "an animal with long front teeth called incisors. These teeth are very sharp, and they keep growing for almost the entire life of the rodent. There are more than 2,000 species, or kinds, of rodents."