Animal crossing: Highway bridge aims to save California's cougars

The animal, also known as a puma or a cougar, is the region's apex predator, and spotting them is something of a hobby for locals. A 2013 photograph of the much loved -- but unimaginatively named -- P-22 in front of the Hollywood sign cemented the creature's place in the popular imagination. But the picture also highlighted the difficulties faced by a species whose habitat has been invaded by people, as well as from the growing risks of extreme weather events driven by human-caused climate change.