The Arctic wolf (Canis lupus arctos) is a subspecies of the grey wolf. Adult Arctic wolves are between 25 and 31 inches in height (measured at shoulder) and reach weights of up to 175 pounds. Females tend to be smaller and lighter than males. They measure between 3 and 5 feet from head to tail. Their thick coat is off-white.
Arctic wolves live in groups of 7 to 10 individuals. Occasionally, Arctic wolves form groups of larger numbers (up to 30 individuals). They reach sexual maturity at 2 to 3 years and have gestation preiods of 53 to 61 days. Litters usually include 4 to 5 pups. Their average livespan is about 7 years. Arctic wolves inhabit Arctic land masses, they do not inhabit permanent Arctic ice sheets.
Burnie D, Wilson DE. 2001. Animal. London: Dorling Kindersley. 624 p.