Witness dramatic stories of survival among the biggest, most successful meat-eating predators in the world and how their biological imperative drives, shapes and decides the fate of their world and ours. New science tells us how these top predators hold entire ecosystems together, maintaining the fragile balance of every living thing just by their dominance. Sharks and lions—what would our world be without them? Go close-up to the jaws and claws of two of the most awesome carnivores to find the answer. Narrated by actor Alec Baldwin.

Special Feature: Hunter & Hunted: Great White Sharks (52 minutes).

Not available for shipment outside of the U.S. and Canada.

• 1 disc, 2 episodes; approximately 100 minutes
• © 2007