Allosaurus was a carnivore, so the term "herd" isn't accurate. A group of carnivorous animals is usually called a "pack." Allosaurus may or may not have lived in packs, and there isn't any definitive evidence in either direction. Another possibility is that they were solitary, but occasionally gathered together to hunt large sauropods such as Diplodocus, Brachiosaurus, Camarasaurus, and Apatosaurus.
The bulk of Allosaurus remains have come from North America, with material also known from Portugal and possibly Tanzania.
It lived 90 - 100 years.
no
no they do not
Sheep live in flocks not herds. They probably do this because they feel safer when there is a few of them around
They live in herds of any numbers between 10 and about 100. They are mostly females, few males live with the herd
some may live in herds but many live in natural habitats or are mainly in cages
Walrus live in herds.
First off herds and groups are the same thing. Gray wolves live in groups/herds in numbers 2-20.
Generally, herbavourous animal groups are referred to as herds, so Protoceratops lived in small herds.
no
Yes.