PHOTOS: Living With Big Cats

The Jouberts say they are not just after impressive pictures. They describe themselves as being on a mission to remind people that wild places have value, even if we never visit them. "I think that if we lose that, we lose that sense within our souls of creativity, of everything being OK," said Dereck. "If we understand that the entire planet is taken up with high-rise buildings, this will be a very, very sad place." (National Geographic/Beverly Joubert)