No. A den is where they live and bears don't live in groups. They only seek out other bears for mates. Otherwise they live alone unless they are a mother and her cubs.
Same for other bears: a sleuth, sloth or litter of polar bears.
The collective noun for a den, particularly when referring to a group of animals such as foxes or bears that occupy a den, is a "clan." In a broader context, a "den" itself can also refer to a group of cubs or young animals that reside together in a den. However, the specific collective terms can vary depending on the species being referenced.
A group of snakes is typically referred to as a "den" or a "bed."
In their den
Chicago or a Den, depends on which bears you mean?
In a den selected by their mothers, usually during her winter den up.
a rabbit's habitat is called a "warren"No, a warren is a group of rabbits. A rabbits den is called a hutch.
a den of a lion
A sleuth or a sloth of bears
No
They are usually born in a den.
Holes underground are called caves. They could be in the side of a hill. The places where bears live are called dens. A bear's den may be in a cave but often is not.