Explore remarkable terrain and wildlife found in deserts and grasslands, covering approximately half of our planet's total land area, in this fascinating program. These varied ecosystems are the perfect hunting grounds for some of the most dangerous animals on Earth. Desert sands conceal unique and venomous creatures while grassy plains provide an abundant food supply for large carnivores. In this video, 12 elite animals stand above the pack, armed with blinding speed, ingenious camouflage, venomous fangs, and bone-crushing jaws. Whether hunting or defending, their hard-core weaponry should be avoided at all costs! Take a journey into the dangerous domains where they reveal their full, lethal potential and see what happens if we get in their way. They're elusive, powerful-and dangerous.

Encoded with permission for digital streaming by Infobase on April 29, 2013. Learn360 is distributed by Infobase for Films for the Humanities & Sciences, Cambridge Educational, Meridian Education, and Shopware. Part of the series Deadly Dozen.

Introduction: Deserts to Grasslands: Deadly Dozen (2:08) -- Sidewinder Rattlesnake Desert Adaptations (1:28) -- Rattlesnake Kills Prey (2:05) -- Six-Eyed Sand Spider (3:06) -- Zebra Snake (1:38) -- Zebra Snake Versus Chameleon (2:18) -- Zebra Snake and Humans (0:57) -- African Plains, Predators and Migration (1:17) -- African Lion (2:56) -- Cheetah (2:19) -- Cheetahs Killing and Eating (1:02) -- Hyenas (2:08) -- Hyenas Brains and Cooperation (1:47) -- Death Adder (2:14) -- Death Adder and Humans (0:56) -- Western Coral Snake (2:21) -- African Wild Dog's Deceptions (2:40) -- African Wild Dog Catches Prey (1:53) -- Black Rhinos and Humans (3:25) -- Bison (2:21) -- Bison Versus Grey Wolf (1:13) -- African Elephant (2:15) -- Elephant Attacks Humans (4:38) -- Summary: Deserts to Grasslands: Deadly Dozen (0:28) -- Credits: Deserts to Grasslands: Deadly Dozen (0:15).