Grey wolves sometimes hunt by themselves. They hunt small prey such as mice, rabbits, squirrels, beavers, ducks, geese, and fish. Wolves normally hunt in organized groups. They will hunt and eat large prey such as deer, moose, caribou, and big horn sheep. The wolves will eat large portions of their prey by eating everything except for the large bones, some hair, and hide. They will eat the stomach muscles, the tendons, organs, and marrow. They will eat 80 to 100 % of the prey's body. Wolves will sprawl out on the open ground and rest after eating with their pack members.
Wolves have powerful jaws that make them able to eat strong thick meat, chew on bones, and to bite their prey to weaken them. Once the wolf bites the prey, it will fall down. The prey will be injured or dead. This is a successful hunt.