Understanding the Ecological Role of Wolves in Yellowstone National Park
Loathed as a threat and nuisance, the wolf population in Yellowstone National Park was essentially wiped out by the mid 1920’s. That changed in 1995, when the National Park Service reintroduced them there, with the goal of restoring a natural predator/prey dynamic to the landscape.
NOTE: you can get some excellent Yellowstone guides and resources at: yellowstone-national-park.com