I've read that the castoroides (giant beaver) was the approximate size of a black bear. This is my castoroides skull with a 250lb black bear skull on the left and a trophy African lion on the right. #fossilhunting #pleistocene #Iowa #fossil | Bison Bison Paleo Fossils

891K views · 32K reactions | Beaver dams benefit the entire local ecosystem. From reducing potential flooding to storing more carbon, the benefits are so great that beavers are practically climate heroes—but they’ve long been under threat from humans. Learn more about these semi-aquatic rodents, their habitats, and the dangers they face: https://on.natgeo.com/43JL2nK | National Geographic | Facebook