When Surya, the orangutan, meets a hound dog by the river, the two carry on like long lost friends.
In 1997, just off the Farallon Islands, a group of whale watchers watch an Orca prey upon a great white shark.
Two brother hound dogs must get split up.
At Peninsula Valdes, killer whales use the combination of deep water and steep beaches to their advantage during the hunt.
Many sex offenders keep their stories secret, but this man wants to tell his side of what happened.
At DogTown, animals get a second chance, even those rescued from Michael Vick’s property.
When a young hippo mistakes a 130-year old tortoise for another hippo, they become loyal companions.
Explore wonders of the Earth through natural features and animals that live within the biosphere.
A stray fang during a snake measuring could kill.
A handful of gorillas still exist in the wild in the Virunga mountains.  They live in close-knit packs with patriarchs called Silverbacks.
Sizing Up Sperm uses real people to represent 250 million sperm on their marathon quest to be first to reach a single egg.
Hear one woman’s story of her family's survival.
Jaime’s pit bull attacked and killed his sister's dog. But he's sure it wasn't due to bad training. Cesar checks his technique.
To prey upon the shark, the Orca has learned how to immobilize it by turning it on its back — a state called 'tonic immobility.'
After hours battling the massive fish, anglers reel in the menacing black marlin — but this is no ordinary catch and release.
An elite team of stealth aircraft modelers are taking on a mysterious project: Hitler’s secret stealth fighter.
Fishing by moonlight, these men net a giant catfish.
Fa’Afafines' sex is male, but gender is female.
After surviving 6 years alone in the Grand Canyon, this wild and dreadlocked pup is heading to DogTown.
A tsunami survivor describes her ordeal in Hawaii.



