Their lips can close behind their front teeth so that they can gnaw underwater and still keep water and splinters out of their mouths. This allows them to stay in their lodges in the winter, where they're safe from predators.
They have slow circulation to their extremities, huge lungs, and a huge liver for storing oxidized blood. All of these things mean that they can stay underwater for extended periods of time. For more, check out http://www.torontozoo.com/adoptapond/curriculum/f1_popup1.html
They build dams.
they build dams
The Green Beaver Company uses a beaver on the toothpaste box.
The beaver is one but there are many others. You should search the internet.
Leave It to Beaver - 1957 Beaver's Cat Problem 5-5 was released on: USA: 4 November 1961
Laura Beaver is 5' 6".
Norman Beaver is 5' 11".
Leave It to Beaver - 1957 Beaver's Fear 5-21 was released on: USA: 24 February 1962
Leave It to Beaver - 1957 Beaver's Jacket 5-19 was released on: USA: 10 February 1962
Leave It to Beaver - 1957 Beaver's Typewriter 5-29 was released on: USA: 21 April 1962
Leave It to Beaver - 1957 Beaver the Babysitter 5-27 was released on: USA: 7 April 1962
Leave It to Beaver - 1957 Beaver's Laundry 5-25 was released on: USA: 24 March 1962
Leave It to Beaver - 1957 Beaver the Bunny 5-16 was released on: USA: 20 January 1962
Leave It to Beaver - 1957 Beaver's Electric Trains 5-17 was released on: USA: 27 January 1962