Olive Ridley sea turtle hatchlings run the gauntlet in Costa Rica. Only 5 out of 100 will make it through their first 8 hours out of the nest.

Watch a special sneak peek of the epic seven-part series North America. Discovery.com/NorthAmerica

For the male jumping spider, flirting with a female is a dangerous game. If he fails, she'll stab him and slurp out his insides; if he succeeds, she'll be mesmerized.

A baby mountain goat gets separated from its mother and must battle the raging rapids to be reunited.

In this deleted scene from North America, gray wolves hunt caribou in Labrador, Canada. Their hungry pups are counting on them to make a successful kill.

A chipmunk gathers nuts for the winter, amassing about 6,000 of them by end of fall. But he needs to keep an eye out for pickpockets...

An old bighorn sheep and a young contender collide head-on in a fight for mating rights. Their thick, shock-absorbing skulls can withstand 800 pounds of force.

An acorn woodpecker guards its carefully stashed nuts from a very hungry and persistent squirrel.

Go behind the scenes of the alligator sequences with North America Cinematographer Sophie Darlington and Assistant Producer Ben Wallis.

The adorable collared pika is as cute and cuddly as they come, that is unless you're a bird that's blown off course in the Alaskan wilderness...

In this deleted scene from North America, starving bison struggle to survive when winter sets in, and a bison calf succumbs to the elements.

This one-pound bunny, called a pygmy rabbit, gets into a high-speed chase with a long-tailed weasel.

Go behind the scenes of the fighting mustangs sequence with North America cinematographer Sophie Darlington.

In the wintry foothills of North America, a baby black bear's life begins. He must "learn the ropes" from mom in order to survive.

An F5 tornado is heading straight for the hospital where Shay-la is having her labor induced. She's already had the epidural so there's no stopping the labor now.

The amazing sights and sounds of North America's savage coasts come to life in our split-second highlights real.