It is called a lodge. A lodge is made out of sticks.
Beavers are the size of a puppy dog.
Beaver babies are called kits or pups. Beavers are brown with a tail that looks like a tennis racket without holes. Beavers have webbed feet like a ducks, with nails for the back feet. Animal claws for the front feet. The beavers front teeth are called incisors.