Throughout history, ghostly apparitions have troubled humanity. Castles are said to be haunted for eternity by the souls of their original inhabitants. But are there such things as ghostly animals? When animals die can they too come back to haunt us?

The Beast of Gevaudan was an infamous killer that stalked the streets of Auvergne, France. Was this a runaway exotic animal, or a strange crossbreed experiment? Find out if the NMU team can uncover the mystery of this monster murderer!

In search of the Thylacine, the Animal X Natural Mystery Unit heads to Australia's Tasmanian wilderness, where eyewitnesses claim the creature still lives. Experts believe the last of its kind died in an Australian zoo in the 1930's.

The Animal X- Natural Mystery Unit may finally have proof that Bigfoot, more properly known as the 'Unidentified North American Primate', is alive and well. Daniel and Natalie join Bigfoot researcher Chester Moore, who says he's found the home of an elusive non-human primate at a secret location in Texas. As they search for clues, our investigators are stalked by this unknown creature for more than 24 hours. They hear eerie night calls, see broken and twisted tree limbs, and are convinced that it was Bigfoot they glimpsed disappearing into the forest. Could the mysterious image captured on their cameras be the face of the Texas Bigfoot? Are these animals an unidentified category of ape or maybe they're the missing link that science has been looking for? Amongst those convinced that Bigfoot exists is a prominent American criminologist and fingerprint expert. He has no doubt that footprint casts claimed to have been made by Bigfoot are genuine.

Mysterious winged creatures have been said to inhabit our skies for centuries. Join the NMU team in search of the Mothman, The Birdman, Thunderbirds.

Many believe that ancient, unidentified monsters lurk in the world's oceans and waterways. Do remnants of the dinosaur age still exist?

Some people believe that a remnant of the dinosaur era may have continued to evolve into a humanoid being. The Natural Mystery Unit hears first person accounts of glowing red eyes, shiny scales, and lizard men standing 7 feet tall.

El Chupacabra is described as a vampire-like creature that drains its victims of blood. It is said to be 3-5 feet tall with a gray body, glowing red eyes, sharp teeth, and three-fingered claw-like hands. Is it real? The NMU team is about to find out.

Eyewitnesses describe Big Cats roaming the outback of Australia. Where did they come from or how did they get there? What we do know is that non native felines are now prowling the bush land in some cases attacking people.

Those who think of humans as the supreme beings on Earth often overlook the incredible abilities of other species. NMU takes a break from cryptozoology to explore bio-inspiration, looking to nature to engineer solutions to human problems.