Eastern Cougar (Puma Concolor Couguar). This photograph was taken in 1986, prior to when they were officially declared extinct in 2018. Stock Photo | Adobe Stock
Pine Ridge researchers gain knowledge about the cougar | Recreation | norfolkdailynews.com
Why Making The Eastern Puma Extinct Is A Good Thing - UNILAD
Mountain lion P-54 was pregnant when struck, killed by vehicle - Los Angeles Times
The 'Cougar Conundrum': Q&A with author Mark Elbroch
Eastern cougar ruled extinct by U.S. Fish and Wildlife Service
Eastern Cougars Removed from Endangered Species List - Mountain Lion Foundation
Pumas, Panthers & Cougars: Facts About America's Big Cats | Live Science
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)
World's Largest Wildlife Bridge Could Save Mountain Lions - Scientific American
Are Mountain Lions Endangered? Conservation Status
Eastern cougar declared extinct by US government - CSMonitor.com
Mountain Lions in California
Eastern Cougar May Be Declared Extinct - The Wildlife Society