The term for a group of wolves that live and hunt together is a pack.
A wolf pack is usually a family group centered on a breeding pair and their offspring from one or more years. Members cooperate in raising pups, defending territory, traveling, and sometimes pursuing large prey such as elk, deer, moose, or bison.
Pack size is not fixed. In North America, the average is about eight wolves, while European packs average roughly 5.5. Food availability, pup survival, human persecution, and the dispersal of young wolves all influence the number. A lone wolf may be temporarily separated from its pack while seeking a mate or territory.
The alternatives describe groups of other animals: a flock is commonly used for birds, a pride for lions, and a herd for many grazing mammals. Wolves are social predators, but larger packs are not automatically better hunters; the most effective size depends on the prey and local conditions.