Wolf pups are left alone at dens from time to time while their parents go out in search of food. When a parent returns, the pups go into somewhat of a frenzy (for wolf pups that is) trying to find their parent and presumably get food. Here is one such instance from this spring of the Half-Moon pups. The pups were just hanging out by the den when they heard the whining of one of their parents, likely their mom, calling them. This whining initiates a little pup stampede as the pups start zipping a