Arctic Wolves generally are smaller than Gray Wolves, being about 90 to 150 cm (3 to 5 feet) long including the tail; males are larger than females. Their shoulder heights vary from 65 to 80 cm (25 to 31 inches); Arctic Wolves are bulkier than Gray Wolves, often weighing over 45 kg (100 pounds). Weights of up to 80 kg (175 pounds) have been observed in full-grown males. Arctic Wolves have achieved lifespans of over 17 years in captivity; however, in the wild, the average lifespan is only 7 years. (from Wikipedia)

