HSWCoreAnimal

Meet three of the most vicious fighters in the tiny and ongoing bug battles for supremacy.

Katydids (Platycleis affinis) has the largest testes in proportion to body mass of any animal recorded.

Watch what happens when these two titans of the forest floor meet in a duel to the death.

It's a heavy weight match up when an unsuspecting spider is confronted with an angered vinegaroon.

A pair of leaping humpback whales nearly crush some curious onlookers. Jorge Ribas talks to a whale researcher to find out what the whales were doing right, and the people doing wrong.

If you're never seen acupuncture performed on an animal before, we'd like to offer you this opportunity, courtesy of Mike Rowe and a goat named Lilly.

Dr. Andrew West wants to see how sharks will react to humans being in open water with them. What better way to do this than jump right on in with the sharks?

Want some baby fish? Lean over the pan, position your female, find the gonads ... and start to gently squeeze. (Believe us, it's a sight you won't soon forget.)

The Ogre-faced spider isn't the only ugly thing about this relentless ant attack.

HowStuffWorks heads to Hartsfield-Jackson International Airport to catch the Beagle Brigade sniffing out illegal agricultural contraband.

Dr. Andrew West meets with scientists at a wild animal refuge to observe an alligator nest. Biologist Ruth Elsey explains how a slight temperature variation can produce a major difference in hatchlings.

Dr. Andrew West enters a controlled shark environment to see how they will react to his presence.

Actor Liam Neeson fights off a pack of killer wolves in the new movie, The Grey. But do wolves really eat people? Jorge Ribas separates fact from fiction.

Most victims of an alligator attack don't see them until it is too late. Dr. Joshua Perper, a Florida forensic pathologist, explains anthropophagy.

When an obscure Virginia law prevents Mike Rowe -- who is not a licensed vet -- from performing acupuncture on a goat that isn't his, he does the obvious.

As part of a thank you to the fire fighters of the community, the Wyatt ladies give them an opportunity to shoot some awesome guns.

Tia comes to the aid of a woman whose dog rescue suffered an enormous loss in a recent tornado.

A rehabilitated loggerhead sea turtle was released by staff from the Turtle Hospital in Marathon, Florida. Discovery News reporter Jessica Marshall was there to witness the turtle's return to its habitat.

A farmhand at a tiger reserve relives the day he was mauled and shows his scars.

Kasey-Dee Gardner finds out why man's best friend can't eat the same foods as humans.

At a walleye hatchery Mike Rowe embarks upon the "soul deadening" task of counting fish eggs in order to determine the number per liter.

A shark attack victim tells Dr. Andrew West his story.

Introducing Animalist, a Discovery Digital Network, where you can let your inner animal run wild!

In parts of Florida and Louisiana, the alligator population continues to explode, leading to many close encounters with humans. Dr. Andrew West explores the situation.

Bats can spread deadly human diseases. Join Lauren as she interviews a virologist about the powerful immune systems of these fascinating creatures of the night.