First-ever atlas of big-game migrations

The first-ever atlas of ungulate migration was released this week, detailing the ecology and conservation of migratory big-game species including mule deer, elk and pronghorn in Wyoming, the greater Yellowstone ecosystem ...

Rare lynx found in Spain after being released in Portugal

Spanish environmental authorities say they have captured a rare lynx in Catalonia, three years after it was released in Portugal. Litio, a four-year-old Iberian lynx, had been spotted on the outskirts of Barcelona on May ...

A cougar's epic journey east

A male cougar in search of a mate traveled more than 1,500 miles from the Black Hills of South Dakota to Connecticut, leaving a trail of clues that enabled scientists to verify his odyssey.

Behind the scenes with a Los Angeles mountain lion expert

When LA's Griffith Park mountain lion crawls under someone's house, or a brother-and-sister pair become the first mountain lions with tracking collars to cross a freeway since 2009, Seth Riley is at the top of the list of ...