"Prairie dogs are dubbed a keystone species for good reason because the burrows they dig are used by dozens of other animals, from insects and spiders to rattlesnakes, salamanders, owls and more. The highly endangered black-footed ferret depends almost completely on prairie dogs for food, and may also live in their abandoned burrows. In addition, prairie dog activity makes the grass areas around their burrows especially nourishing for grazing animals...

Young conservationist Chang overcomes the odds to save and return an elephant to its natural habitat.