In the Northern Rocky Mountains, wolves (Canis lupus) had been eliminated, but there were healthy populations across the border to Canada.  The recovery strategy for the region was to relocate wild wolves from Canada into suitable habitats in central Idaho (35 animals) and Yellowstone National Park (31 animals).  The original goal of the recovery program was three populations of 150 wolves.  The Northern gray wolf was removed from the endangered species list in 2012, at which time there were thought to be 1,774 wild wolves living in three genetically connected populations.  "The Grizzly & Wolf Discovery Center" by whalt  is licensed by CC BY 2.0.
 

• Gray Wolves in the Northern Rocky Mountains