Green Fire Productions.

"Birds, butterflies, beaver and antelope, wildflowers and frogs -- could their survival possibly be connected to top predators like the wolf and cougar? For those who have seldom given thought to the great predators so often missing from the web of life, there is a world of reason to think again...[J]ourney to the heart of predator country: the Yellowstone plateau; the canyons of Zion; and the rugged country of Idaho and Minnesota, to learn from scientists...