Discover Reading Level 3 Nonfiction Reader Learn all about rodents in this nonfiction reader. Students will develop vocabulary and understanding of the different species of rodents and their characteristics. Chinchillas, Beavers, Groundhogs, Hamsters and more are featured in this interesting text about different rodents. Sample Text: Guinea pigs are not from Guinea nor are they pigs. Like chinchillas, guinea pigs are also from the Andes Mountains. They eat grasses and other vegetation. They don't make their own nests. Instead, they live in the burrows of other animals.