Wolves - playfully taking their place
These young wolves obviously are no more puppies, but they're not yet fully mature. So they're staying with their parents' pack, developping their skills for survival and helping raise this year's puppies.
The ability of playing with each other and taking roles in terms underlines the deeply social character of the wolf!

The wolf is a large canine native to Eurasia and North America. The wolf is the largest extant member of the family Canidae, and is further distinguished from other Canis species by its less pointed ears and muzzle, as well as a shorter torso and a longer tail.
Similar species: Carnivorans
By gglaeser
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Uploaded Dec 4, 2011. Captured .