Female Beavers are smaller and lighter in color than the dark males. The female stays in the nest with the pups, where there's an underwater entrance, but a high platform that is out of the water and warm. Both sexes have the "paddle tail.
10+ Adorable Baby Beavers To Celebrate International Beaver Day
Mara ~ These large relatives of guinea pigs are common in the Patagonian steppes of Argentina, but also live in Paraguay and elsewhere in South America. Maras are the fourth-largest rodent in the world, after capybaras, beavers, and porcupines