WEBISODE

Lions and hyenas face off over a kill and one of the clan makes a fatal mistake.

Two of Africa’s deadliest predators square off in an ancient battle for prey at the waterhole.

Brady Barr examines a hippo from very close.

Cesar comes to the aid of a professional dog groomer and a house that's full of big dogs.

To orcas, almost every animal -- no matter how big -- is prey.

In Nogales, Arizona, CBP officers prevent a wanted man from slipping across the border and uncover a shocking cartel smuggling.

At the port of entry, CBP agents hit upon a narcotics load stashed inside a silver pickup truck.

CBP agents take off to patrol the Sonoran Desert with the help of a unmanned aircraft called The Predator.

CBP officers are trained to identify impostors among millions of people that walk right up to America's front door.

The Blackhawk crew helps ground agents to track down illegal immigrants during the night.

FOB agents come out in force to patrol one of the most active trails at night.

Border Patrol Agent William Ortiz chases a pickup loaded with illegal immigrants.

CBP officers and agents try to save a group of suspected illegal immigrants lost in the desert.

CBP agents meet two possible young victims of human trafficking and sexual exploitation.

Port of entry officers find several packages of money in a shiny red pickup truck heading into Mexico.