Yellowstone National Park – the United States’ first national park – turns 150 years old this year. Essential to the balance of its ecosystem, Cougars have prowled the park’s North American landscape for thousands of years. Yellowstone Forever’s work preserves the decreasing population of western Cougars, as wildlife corridors shrink. Conservationists address their habitat, safety and food needs while minimizing risk to humans. #Chantecaille 🐾