Allosaurus laid hard shelled eggs like other dinosaurs and like birds do today. They probably laid their eggs in nests. Evidence suggests that they didn't raise their young, however. This is because the proportions of juvenile Allosaurus legs are very different from those of full grown Allosaurus, and the different leg proportions suggest that juvenile used different hunting methods from adults. If this is the case, they probably had to fend for themselves, otherwise the adults would be hunting for them.
a den in a tree is called a nest.
yes
Raccoons have a den, not a nest.
den
i think the real name for a snakes home is a nest, or a den
The Emperor penguin lives in neither a den nor a nest. This species of penguin has no fixed nesting site.
female will have their cubs in a den (thickets or rocky crevices).
A hawk doesn't have a den, but a big nest.
Neither! However, a female crocodile does build a nest to incubate her eggs but she does not live in it.
The "polar Allosaurus" is called Cryolophosaurus. Like all dinosaurs, Cryolophosaurus would have laid hard shelled eggs, and the babies would hatch after the eggs incubated for a period of time in the nest.
Allosaurus reproduced by laying hard shelled eggs, most likely in a nest of vegetation to incubate the eggs. It is unknown whether there was any parental care involved, and if there was, how much is also unknown.
den but also in hollow trees,they are very good climbers