From: National Geographic Channel on Sat, May 07 2011 6:59 PM

A vet encounters a disease she’s never seen before when a severely ill 8-week-old Catahoula-mix comes to the sanctuary.

From: National Geographic Channel on Sat, May 07 2011 6:59 PM

NGC goes to the border to examine the growing tide of illegal activity that includes human and drug smuggling.

From: National Geographic Channel on Sat, May 07 2011 6:59 PM

Rescue Ink confronts a cat hoarder and a family with a dog living in squalid conditions, then helps a paralyzed dachshund.

From: National Geographic Channel on Sat, May 07 2011 6:59 PM

Rescue Ink confronts a cat hoarder and a family with a dog living in squalid conditions, then helps a paralyzed dachshund.

From: National Geographic Channel on Sat, May 07 2011 6:59 PM

What’s the deadliest threat to humans? An asteroid tearing through space with the explosive power of 100 million mega-tons of TNT.

From: National Geographic Channel on Sat, May 07 2011 6:59 PM

In 1968, North Vietnamese Communists launch the Tet Offensive, the deadly turning point of the Vietnam war.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Meet one of DogTown’s toughest challenges: Clemance, a shepherd mix rescued from the 2006 Lebanon-Israel war.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Meet one of DogTown’s toughest challenges: Clemance, a shepherd mix rescued from the 2006 Lebanon-Israel war.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Alfred doesn’t look like he scares easily, but his fear of spiders is out of control. Now it's time to face his worst nightmare.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

If caught in a fight for your life, what would you do? Self-defense masters tackle the question.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Shadow Wolves is an elite unit of just 12 Native American federal agents who hunt down drug smugglers crossing the U.S. border.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

NGC takes you to Romania to dissect the legend of Dracula, and a self-professed, blood-drinking vampire tells all.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Explorer takes you inside the fight on the ground and the skies above the rugged terrain of the forbidden zone called Talibanistan.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

During the final years of the war, U.S. soldiers must face plummeting morale and the frustration of the American public.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Everything you don’t know about the rituals and icons, even the science, that surround this cherished American holiday.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Lisa Ling steps into the world of marijuana cultivators, reporting from secret farms and not-so-secret grow houses.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Hazel Farris' mummified remains — bought for $25 and handed down through three generations -- give her latest owner the willies.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Hazel Farris' mummified remains — bought for $25 and handed down through three generations -- give her latest owner the willies.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Join the search for an elusive man-sized predator that may hold the key to evolutionary science.

From: National Geographic Channel on Sat, May 07 2011 6:58 PM

Meet the menagerie of monsters that haunt the night and learn how certain traditions are rooted in ancient cultural practices.