About Rodentia
Rodentia are the largest group of mammals. There are about 1,500 living rodent species. The most common ones are mice, rats, hamsters etc., but they also include beavers, porcupines
Rodents are native to all continents, except for Antarctica.
Even though there is a great diversity in the rodent family, they can all be identified by common features. All rodents have a single pair of incisors (front teeth) in each jaw, which grow continually through the rodent's life.