Animal Face-Off

The world's last population of Asiatic lions lives in northern India, only 200 miles away from the nearest tigers. Experts agree that an encounter between a lion and a tiger is a fight that's too close to call.

In their investigation of who would win in a battle between a saltwater crocodile and a great white shark, an international team of experts, designers and engineers biomechanically tests the biting ability of metal replicas.

Hippos reportedly kill more humans than any other animal in Africa, and bull sharks are blamed for more attacks on humans than any other shark species. When a bull shark goes after a hippo, the stage is set for a mighty fight.