The Ferret is not in the rodent family. It belongs to the family "Mustelidae," which includes weasels, otters, and badgers. The Chinchilla and Groundhog, on the other hand, are both rodents. The Chinchilla is a small, furry rodent native to the Andes Mountains in South America, and the Groundhog, also known as a woodchuck, is a rodent found in North America.