Rory Young describes a lion mauling to show how dangerous these animals can be.

Vampire bats are unique in that they live entirely on blood. That trait also makes them carriers for rabies.

Monster Week is coming with all-new monster-sized specials. Tune in starting Sunday, May 17, 9/8c. Don't watch alone.

What could be driving a serial killer tiger to unnaturally hunt humans? Officials hot on the tracks of this tigress may have just come across a breakthrough clue in their hunt.

Next time, save time! Download the online check-in app today. Great Clips - it's gonna be great.

Next time, save time! Download the online check-in app today. Great Clips - it's gonna be great.

With serrated teeth, armor-like scales and venomous saliva, the Komodo Dragon has evolved from dangerous giant lizards to dominate the food chain.

This witness claims to have seen a Tasmanian Tiger on the side of the road. And she isn't the only one.

One man recounts the day he accidentally came across a mother and her cubs.

Ron Huff shared a small apartment with six monitor lizards. His tragic end is just another reason you should avoid keeping exotic animals as pets.

History shows why rabies is one of the most terrifying diseases around.

With the looks of a brown bear but the aggressive behavior of the polar bear, this hybrid could be mistaken for a yeti.

They are non-venomous, but they attack and eat anything and everything they can wrap themselves around.

One third of Australia's snake population is venomous. The Eastern Brown in the most dangerous of them all.

When an Alabama man is bitten in the woods by an unidentified beast, he is left scarred with strange markings on his back. His hunt begins to find this unnatural, mutated monster before it comes back for MORE.

Paul Bedard, reptilian expert, heads to Costa Rica to investigate a growing monster crocodile infestation. As attacks increase, Bedard and team are looking for solutions to help the people and the crocs.

A whale's tail seems to have been bitten off by a giant predator. Could this have been Megalodon?

Mark Evans is finally getting answers about the three samples he collected in Nepal.

As human population grows, bears' habitats shrink, leading to increased numbers of bear-human interactions.

One man recounts the day he accidentally came across a mother and her cubs.

Rory Young describes a lion mauling to show how dangerous these animals can be.

These experts offer some tips on how to survive a big cat attack.

While they're beautiful, kangaroos should be left alone, as Margaret and her dog found out.

One third of Australia's snake population is venomous. The Eastern Brown in the most dangerous of them all.

Forrest meets with a Tasmanian Tiger expert to learn more about their relationship with the thylacine.

This witness claims to have seen a Tasmanian Tiger on the side of the road. And she isn't the only one.

History shows why rabies is one of the most terrifying diseases around.

Vampire bats are unique in that they live entirely on blood. That trait also makes them carriers for rabies.

You are what they eat. See what's coming up this year during Monster Week.

With serrated teeth, armor-like scales and venomous saliva, the Komodo Dragon has evolved from dangerous giant lizards to dominate the food chain.

Ron Huff shared a small apartment with six monitor lizards. His tragic end is just another reason you should avoid keeping exotic animals as pets.

Prepare yourselves - a full week of monsters is coming in May. Stay tuned for more details.