Federal agency says Eastern puma extinct, drops protections
The Eastern Cougar Is Officially Extinct - Atlas Obscura
Puma That Vanished from U.S. East Coast 80 Years Ago Sadly Declared Extinct
Eastern cougar declared extinct, but whether it ever existed is a question | CBC News
Eastern cougar - Wikipedia
Eastern Puma Declared Extinct, 80 Years After Last Confirmed Sighting | Maine Public
Local Mountain Lion Population Faces Precipitous Decline in Genetic Diversity Within 50 Years, Possible Extinction - Santa Monica Mountains National Recreation Area (U.S. National Park Service)