narrator: on this episode of "earth focus"...los angeles is knownwn for itsts urban sprawl d traffic-clogogged syststem of frfreeways rather than i its diverse array of living species. the second-most-populated city in america is actually a biodiviverse hotspot--one ofof just a few in the entire world. withthin the confinenes of thihs conncrete jungle, , species are adapting and, in some cases, even thriving. welcome to the los angeles urban wild. woman: southern california is one of many hotspot areas around the globe which are areas ofof extraordinary biological diversity. man: if we just think about l.a. county, you're going from sea level to 10,064 feet when you get up to mt. san antio. when y you think about that elevaononal range,, which is s the greatate elevational rangnge of any couny in the united ststates, there'sa divererse suite of habitatsts in theere, and that includudes habitat that might be right along the busiest freeway in the country...but it also includes places where mountain lions live. i mean, it's just this place of absolutely incredible diversity when it comes to thin