This pack of wolves moves in unison, as if compelled by a magical force. Alpha wolves are the biggest and strongest of a wolf pack. They are smart enough to question orders but will generally do what their told if commanded by a Wicked Witch.
Most wolf packs work together, but wolf swarms are larger packs that take cooperation to another level entirely, compelled by the silver whistle to do the whistler's bidding.
5e SRD
Carnivorous relatives of dogs that hunt in packs.
OSE
Carnivorous relatives of dogs that hunt in packs
Wolves are predators that hunt in packs of up to 30. They are normally 26 to 30 in tall at the shoulder, and males weigh 80 to 100 lbs. A wolf pack's howling may panic horses and other herbivores (50% chance per animal). A wolf pack will encircle prey, seeking to attack from behind. Once a pack has identified possible prey, they usually (75%) follow the group, waiting for the chance to attack.
OSRIC