Other giant animals that roamed the earth during this same period included woolly mammoths and saber tooth tigers. Now, the average beaver weighs between 45-50 pounds. Although, larger beavers have been found. A beaver trapped in Montana was 5 feet long and weighed 110 pounds. Beavers build dams to protect themselves from predators like coyotes, bobcats, wolves, wolverines, and mountain lions.
Beavers build dams by falling trees.
A beaver can fall a 5 inch diameter tree in about 25 minutes and a 3 inch diameter tree in 10 minutes. They use their front teeth and gnaw around the tee to make until it falls. Falling trees is a dangerous business. A beaver may suffer a gruesome death by falling a tree on top of itself. So, a beaver needs to remember not to get to eager.