The document provides information about the gray wolf, including its: - Scientific classification within the kingdom Animalia, phylum Chordata, class Mammalia, order Carnivora, family Canidae, and subfamily Caninae. - Physical appearance with long limbs, claws that cannot retract, and fur that varies in color. - Habitat in dense forests and fields of North America, Greenland, Asia, and Europe. - Life cycle including breeding season, typical litter size, lifespan, and pack hierarchy. - Diet consisting primarily of meat from various mammals and occasional berries. - Main predators of other bears and humans. - Role in the environment through population control of prey species and impact