P22, a 4-year-old male mountain lion known as the "Hollywood Lion," is known to traverse the hills in and around Los Angeles. He is seen here recaptured by the National Park Service in March after being exposed to rat poison. AP Photo/National Park Service hide caption

itoggle caption AP Photo/National Park Service

Two adult white rhinos stand in an enclosure at South Africa's Entabeni Safari Conservancy in 2012. Entabeni is one of the world's only dedicated orphanages for rhino calves whose parents were poached for their horns — a trend that is rising. Stephane De Sakutin/AFP/Getty Images hide caption

itoggle caption Stephane De Sakutin/AFP/Getty Images

When wildlife ecologist Danielle Garneau finds roadkill, she uploads data about it onto her smartphone. Sarah Harris/NCPR hide caption

itoggle caption Sarah Harris/NCPR