Animal pranks; indiscriminate mating; animals on the loose.

Freak encounters; unexpected assaults; killer animal instincts.

Discovering the most dysfunctional parents in the animal kingdom.

The smartest beasts on the block.

Komodo dragons seek prey; black widow spiders sense movement; preying mantis attacks its mates; a horned lizard shoots blood from its eyes in self-defense; hedgehog habits.

Promiscuity and post-coital cannibalism.

Flying squirrels; Asian carp spring from the water; flying snakes; vampire bats.

Animals from lions to seahorses challenge the commonly held beliefs about gender roles and boundaries.

Drunk, stoned and hungover animals find healing magic in nature's drugstore.

Creepy critters' cures that could change medicinal practices.

Bizarre farms, farming methods and farmers.

The mystery behind mass animal deaths occurring across the globe.

Animals with creative ways around life's challenge to survival in a world where only the fittest survive.

Mutations, shocking survivors, and freakish feats.

Similarities between humans and animals, including a chimp that knows his own reflection and elephants that hold funerals for their dead.

Bizarre courtship and mating rituals in the animal kingdom.

Sea slugs; hermaphrodite flatworms; fish that walk on land; lizards that walk on water; an octopus that changes colors; snails with built-in harpoons for hunting; sea cucumbers that spill their guts in self-defense.

Giraffes with super powers; fish with chainsaw noses; exploding toads; flying crocodiles; real life liger.

Freaky tactics and outlandish weapons used by some animals.

Showcasing some of the strangest, most shocking animal appendages on the planet, and uncovering their evolutionary advantages.

Creatures prepared in weird ways; beavers building emergency bunkers; spiders laying hairspring traps.

Not all animals are meant to be domesticated and kept as household pets. Many wild animals, by definition, are rough and rowdy, often leading to out-of-bounds behavior or savage instincts run amok. This series showcases jaw-dropping moments captured by cameras, including attacks on people and other animals, "believe it or not" encounters, and animals that portray human traits. Heroic acts of bravery, narrow escapes and unpredictable incidents are also featured in the hourlong episodes.

Put up your dukes -- er, paws -- and prepare to discover epic, bone-shattering clashes between some of the world's deadliest predators. From lions, tigers and bears to meerkats, mongoose and mice, the series features testosterone-induced battles between some of the biggest, baddest and often surprising fighters in the animal kingdom, revealing the extraordinary motivations and strategies that fuel each incredible brawl.

Aquatic ecologist Zeb Hogan gets up close and personal with bizarre giants of the water, specimens equally enormous in proportion and odd in appearance. Among other adventures, Hogan investigates flying fish from Asia that are invading America's waterways, and he searches for one of North America's toothiest and most-misunderstood monster fish, the alligator gar. Some of the species Hogan encounters have survived for centuries but now face the threat of extinction, and he presents groundbreaking research undertaken to protect them.

See the world through the eyes of some of nature's deadliest and most surprising predators.

Investigating the world's most clever and savage predators.