Wolves are very social animals, living in a pack. Most often they are related to each other by blood, led by an alpha male and female. After the alpha mates, you have the lower groups, consisting of non-breeding adults, immature wolves and perhaps outcasts, each with their own ranking. In this picture two pups are being looked after and being led by their two year old sister. Until the pups are old enough to travel with the pack, it always help the pack to have other adults helping with the raising of the young wolves.
Until next moment,
Amar