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)
Federal agency says Eastern puma extinct, drops protections
The Eastern Cougar will be officially listed as extinct — almost 80 years after last sighting | The Independent | The Independent
Eastern cougar declared extinct, but whether it ever existed is a question | CBC News
The eastern puma is declared officially extinct | Daily Mail Online
Eastern Cougar "Extinction" - Some Key Points - Dr. L. Mark Elbroch
Eastern Cougars Declared Extinct—But That Might Not be Bad