Dam.
Lodge
The lair of a burrowing animal is often called a den. Other times it may be referred to as a burrow, or a sett as it is with a badger.
I think it is called a lair
A Beavers home is called a lodge.
beavers are rodents
The collective nouns area colony of beaversa lodge of beaversa family of beavers.
A lair is nothing but a resting (and nesting) place for an animal.
The fox's home may be called a lair,a den or, simply, a burrow.
The animal returned to it's lair at night.
A den, a lair, a burrow - it has many names.
their home or lair is an 'earth' although according to the encyclopaedia they usually sleep in grasses or thickets, using an earth or lair in the breeding season