The pups run and play with the pack but are not able to go hunting with it. This food is regurgitated for the pups to eat. As the pups grow and the fall season approaches, the pups begin to travel with the pack. At ten months of age, the pups are as large as the adults. The pack shares the responsibility of raising the pups.
Pups begin to howl at one month old.
Survival Threats Human encroachment into wolf territory is the largest single survival threat to wolves. Wolves need open land and an abundant supply of prey to survive. The illegal killing of wolves is a serious problem, especially for small populations. Almost one-quarter of the wolves in Minnesota are illegally killed each year. Wolves are an exception among the animals.