Framed primarily as the story of the child Hiro and pack leader Kuro in a 160-strong pack of Japanese macaques, in Jigokudani Monkey Park, Nagano.
The partly very unnatural environments are telling. These monkeys are clearly protected—at least from their natural predators—and accustomed to a human presence. I assume the story has been cleaned up, but it's beautifully filmed. The local species of monkey makes a good symbol of primitive humanity and our link to nature, as they are used in Baraka (1992).