Why do gray wolves often kill young or weakened prey animals?

Gray wolves are apex predators that primarily hunt large herbivores, such as deer, elk, and moose. While they are highly capable hunters, a large percentage of the animals they successfully kill are young, old, or in poor physical condition.12

Wolves target these specific individuals because they are often easier to isolate, chase, and pull to the ground than healthy, prime-aged adults. By focusing on prey that is vulnerable due to age or health, wolves can secure necessary sustenance while minimizing the energy expenditure and physical risk associated with hunting large, powerful animals. This predatory behavior is a natural aspect of their role in the ecosystem, though biologists continue to study and debate the specific long-term effects that wolf predation has on the overall size and health of prey populations.12