All the animals, taken together, are called the animal kingdom.
A gang, herd, or obstinacy of buffalo, a gang of elks
A flock of grouse or partridge
they are called animals because they are all different. on the other hand there is a group which animals are divided by these are:reptilesmammalsamphibiansbirds &fish
all the group animals are mammals,reptiles, insects, and amphibians