When a filmmaker discovered a mountain lion in his backyard, he made a documentary

The first time that Montana-based wildlife filmmaker Casey Anderson locked eyes with the mountain lion living in his backyard, he was close enough to hear her crunching on a dead deer’s bones. Then he noticed that she must have recently given birth. That was when Anderson knew he had to make a film about the mountain lion, whom he nicknames Mama Mo, and her three cubs: Eeny, Meeny, and Miny.There was just one problem: mountain lions aren’t easy to spot. “I’ve been told 1