Doctors discover a hideous infection in a teenager who survives getting sucked into a tornado.

A young Peace Corps volunteer gets her dream assignment in West Africa, only to be hindered by a deadly organism.

Doctors discover something is eating a newborn's eyes and brain.

Young girl develops headaches, nausea and a bizarre rash all over her body after swimming.

Three holiday celebrations and infections; Colorado couple bring home flesh eating parasite; Virginia man's heart is being eaten; Arizona photographer has emergency surgery on Christmas Eve.

In Illinois, a newly engaged man mysteriously collapses and faces organ failure. His fiancé gazes in horror as he must choose between life and limb.

A teenage ballerina suffers from painful migraines and muscle failures; a young missionary's skin crawls when he uncovers an unholy revelation.

A boy suffering from an apparent flu soon develops a life-threatening condition; a former beauty queen develops an extreme case of asthma.

A mother suffers with abdominal pain and nausea for four years until the true cause of her condition is discovered; a 2-year-old girl develops a mysterious lump on her neck.

A 7-year-old girl suffers from painful rashes and mysterious seizures; a college student learns her case of "the flu" is actually a flesh-eating infection.

A mysterious infection takes over a 7-year-old child's brain, causing violent and uncontrollable seizures.

A 1-year-old child who survived a premature birth is attacked from within by an unseen enemy.

Doctors seek to uncover why an Oregon man has been suffering for two years from constant coughing and insomnia.

A California man who suddenly developed a swollen face and yellow eyes is the victim of an infection that is shutting down his organs.

An Ohio toddler stops eating and craves salt; a California business executive suffers a ruptured colon; an elderly New Mexico couple become ill during a trip to New York City.

A parasite pushes a pregnant model toward suicide; a boy on summer vacation contracts an infection that rots his flesh; a hidden killer threatens to suffocate a college freshman.

An infection eats away at a traveler's face; a man's back injury leads to life-threatening complications; a parasite attacks the brain of a promising young athlete.

A sudden infection leaves an expectant young mother in a coma; a Texas woman learns that her lungs are filled with parasitic worms.

A professor becomes an unsuspecting host; an infant falls mysteriously ill; a father is brought to the brink.

Jeremy Wade is not a fisherman; he's an "extreme angler" in search of the biggest and most dangerous freshwater fish, the kind with a taste for human flesh. This action-adventure series also features Wade illustrating how these river monsters are constructed to kill.

Eagle-eyed technical experts prove there is no such thing as a perfect crime as they assemble the pieces every criminal leaves behind. Dramatic crime re-creations and, sometimes, part of the investigations are a staple of the series. Some of the re-creations include alternate versions of the crimes, which are disproved by science. The show's episodes follow each case from the initial investigation until it reaches its legal resolution.

A panel of doctors, a chief medical consultant, a psychologist, a legal representative and a global audience all work together in and effort to help people who are suffering from undiagnosed, misdiagnosed or uncured medical mysteries in "Chasing the Cure." To reach a worldwide audience, various social media pages have been created, a Facebook page and a dedicated website (ChasingTheCureLive.com) where users can submit their cases in a moderated community. Along with social media, top medical hospitals and institutions are providing their expertise to help solve medical mysteries that many people are desperately seeking help for.

Ever owned a cat that would be perfect starring in the feline version of "Psycho"? You know, a pet that wreaks havoc on a household to the point of breaking up relationships, or one whose violent actions sends its owners to the hospital? Cat behaviorist Jackson Galaxy deals with these issues every day, and in this series he lends his expertise to desperate families hoping to rehabilitate their furry companions.

Believe it or not, many women get all the way to the moment of childbirth without knowing they were pregnant. How is that possible? Using true stories as a guide, this series examines some of the reasons, which include a small or inactive fetus, dieting, irregular periods caused by stress, past infertility and poor use of birth control.

Animal Planet expands its family of wildlife law enforcement series, adding to Maine's "North Woods Law" an offering that follows an elite patrol force in Texas. "Lone Star Law" features the men and women of the Texas Game Wardens who protect more than a quarter-million square miles of deserts, lakes, piney woods, bayous, plains and coast in the second-largest state in the U.S. Whether rushing to investigate poaching cases, save flash-flood victims, disrupt illegal smuggling rings, or rescue injured wildlife, the officers are always on the go, defending both animals and citizens.

People who know and work with Pete Nelson describe him as a tree whisperer. For his part, Nelson lets the trees do the talking. He's a world-renowned treehouse designer and builder, and this series documents the work he and his team of craftsmen -- including his son Charlie -- do to create incredible homes and businesses in nature's canopy. Pete uses a combination of science and art to realize clients' sky-high aspirations of magnificent multibedroom treehouses with elaborate kitchens and bathrooms, or simpler, peaceful one-room escapes. "We awaken that inner child who dreams of living among the trees," Pete says. One-of-a-kind above-ground spaces featured in the series include a spa retreat, a brewery, a honeymoon suite, an Irish-themed cottage, and an 800-square-foot Texas treehouse with a full bath and flat-screen TV.

If your idea of an exciting aquarium is the run-of-the-mill rectangular variety with a few exotic fish thrown in, you're not welcome in the wet and wonderful world of Wayde King and Brett Raymer. The brothers-in-law, best friends and business partners operate Acrylic Tank Manufacturing, the biggest aquarium-building manufacturer in the U.S. "Tanked" showcases the guys, their family members who also work at ATM and the shop's crew as they create over-the-top aquariums for a wide array of clients, both celebrities and regular folks. The tanks range from 50 to 50,000 gallons in size, are filled with some of the world's most unusual, colorful and quirky fish, and are limited only by one's imagination.