When predators share an environment, the battle for food is a fact of life.
Pacific walruses travel according to the movement of the ice. As the ice expands in the winter, they move south.
Just how big was the biggest dinosaur ever to walk the face of the earth?
Images from the Sea Monster episode, part of the Beast Man series on Nat Geo Wild.
Photo gallery for Liquid Bomb Plot.
John Varty is the Tiger Man. A South African conservationist and filmmaker, he specializes in big cats.
See photos from James Cameron's expedition to the bottom of the ocean.
Follow Alaska’s seasons and the creatures that must adapt to survive.
Recreated moments of the many mysteries and shocking details of Jesus’ life and ministry.
A unique view into the extraordinary embryonic journey of a shark and a parasitic wasp.
Going for the easy pay day has these people facing the long arm of the law.
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Strictly necessary and performance