ENDANGERED SPECIES -- Here's a glimpse of what was going last month on in dens scattered around the country in a small portion of the wolf's historic range.

In this case, a newly born Mexican crop of wolf pups is being raised in captivity to help revive the species in the southwest.

In this May 6, 2012 photo provided by the Wolf Conservation Center, a newborn Mexican wolf pup is shown at the Center’s facility in South Salem, N.Y.

The eight pups born at the preserve on May 6 could aid the federal program that has reintroduced the endangered species to the wild.

In 2011 it was believed that there were 50 Mexican wolves living wild in the United Sates.