Probably not
Pachycephalosaurus would win, it could easily slam the Velociraptors to the ground.
No, not normally
Pack of wolves...
Herd.
A herd
It's a herd animal.
Yes, a group of horses is called a herd. The herd is generally led by an older mare and is guarded by a stallion, who is also the only breeding male in the herd.
Dogs do not make a herd. Three or more dogs running together is called a 'pack'.
A pack.
Zebras travel in a herd when they do everything.
A group of ferrets is called a "Business"
A herd of buffalo.