Cougars

The cougar (Puma concolor), also called mountain lion, is the largest felid in North America (80 to 165 pounds adult weight) and a top predator native to Greater Yellowstone. As part of predator removal campaigns in the early 1900s, cougars and wolves were killed in national parks and throughout the lower 48 states. Wolves were quickly eradicated and, although cougars were probably eliminated from Yellowstone, the species ultimately persisted in the West because of its cryptic nature and preference for rocky, rugged territory where the cats are difficult to track. Eventually the survivors re-established themselves in Yellowstone, possibly making their way from wilderness areas in central Idaho.
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