Neither! However, a female crocodile does build a nest to incubate her eggs but she does not live in it.
nest
den
The Emperor penguin lives in neither a den nor a nest. This species of penguin has no fixed nesting site.
den but also in hollow trees,they are very good climbers
like most birds an eagle builds a nest
i think the real name for a snakes home is a nest, or a den
They do not live in a den or nest, they are travelling animals that just sleep where ever they are
A squirrel's nest.
Otters live in water, in dens or nests. In winter, when an otter's den or nest freezes over, the otter will look for a new river to live in. P.S. Otters nest's live on top of water or along river banks.
Raccoons have a den, not a nest.
none of them giraffes sleep standing or curled under a tree or other place
a den in a tree is called a nest.
in a nest