Call them rodents of unusual size. The North American beaver, the region's largest rodent and the world's second-largest rodent, can reach up to 4 feet long and weigh in at 70 pounds, according to the ...

A beaver swimming at Schwabacher Landing in Grand Teton National Park. A new study concludes that, by building dams, forming ponds, and digging canals, beavers irrigate vast stream corridors and ...