Llamas take over the streets in Arizona; an otter dodges a hungry orca; a shark takes its chances with a gang of hippos.

Things get tricky when animals get up close and personal during daring rescues and close calls.

Divers have a close call with a great white shark; a sea lion turns the tables on a Russian fisherman; a snow bunny survives an avalanche.

A pod of orcas and a tiger shark engage in a clash of apex predators; a serenade goes awry when a bat takes a bite out of the guitarist.

A group of fishermen meet a giant anaconda; beach goers witness a massive gathering of sharks; a researcher gets on the wrong side of a moose.

An elephant has a run-in with a carload of tourists; a lion's instincts won't be tamed; a tiny dog takes on armed robbers.

A great white comes between another shark and its meal; a capuchin monkey touches a power line; a python sinks its teeth into a crocodile.

A pair of giraffes battle viciously for dominance; a fisherman is caught by feeding alligators; a buffalo tosses a lion like a rag doll.

A circus lion resists captivity; open water swimmers get a surprise visit from a pair of whales; a dog is left on the wrong side of a door.

From sudden shocks and blindsiding attacks to jaw-dropping body slams and bone-rattling collisions, the animal kingdom is full of astonishing ambushes.

Strange animal run-ins when a primate interrupts a traffic stop and a serpent joins a massage session.

The animal kingdom's most amazing encounters; a python takes on prey much larger than own size and a fearless goose taunts a gorilla.

Whether it's out-of-bounds behavior or savage instincts, when animals act out, they're forces to be reckoned with.

The herd rushes to the rescue when a buffalo calf is attacked by a lion; a man and his GoPro stumble into a rattlesnake den.

A French bulldog chases off three black bears in one risky standoff; a kitten finds itself in the middle of heavy traffic; a sea lion with major stamina shows that being out of water won't necessarily save it.

Crazy animal world situations, from out-of-control rampages to dangerous battles and deep-sea encounters.

Animal conflicts, rebellious assaults and dangerous predators; a pack of lions surrounds a baby elephant; a parade horse reacts to loud noise; fish leap from a river.

Sneaky creatures commit crazy acts, from macho street brawls to out-of-control collisions and animal escapes.

A photo-bombing predator; a purse-snatching monkey; a parrot throws a tantrum.

The most treacherous animal mistakes; fearsome surprise attacks; bone-crushing collisions; predators in too deep and animals pushed too far.

From the deepest seas to the tallest mountains, animals prove that when it comes to Mother Nature, there's always an exception to the rule.

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.

Produced by the team that created BBC's "Planet Earth" series, "The Hunt" explores the relationship between predators and their prey. Sir David Attenborough narrates this documentary while the cameras follow the animals in their natural habitats. With a specific focus on strategy, the hunters are examined in detail -- from their use of the environment to their sharp instincts and physical prowess. On the other side of the fence are the hunted, which use their senses and defense tactics to flee when they feel threatened. Each episode centers on a different habitat, and the last one focuses on the state of the planet.

From the creators of the real-time law enforcement series "Live PD" comes a version for animal lovers. It captures the fast-paced drama and intensity of a hospital procedural mixed with the unbreakable bonds between pets and their owners. Host Mark Steines ("Entertainment Tonight") is joined by veterinary experts in the studio to guide viewers through each episode, giving commentary on what is seen at featured animal hospitals and mobile vet clinics around the country. Cameras trail teams of emergency veterinarians and specialists as they work tirelessly through the night to save the lives of pets. The series also accompanies on-call vets to homes and farms to treat animals that are too sick or too big to travel.

In the varied forms of veterinary medicine, Dr. Susan Kelleher's practice may be one of the more unusual. Known as Dr. K, she runs South Florida's Broward Avian and Exotics Animal Hospital, and this series follows the staff as it cares for rabbits, ferrets, foxes, fish, birds, reptiles, marsupials, and even primates. As do some other vets, Kelleher thinks domesticating wild animals like monkeys is a bad idea, but that feeling doesn't interfere with her taking care of them: "If it will fit through the door, I'll treat it," she says.

Jack Hanna has hosted TV shows about wildlife since the premiere of "Jack Hanna's Animal Adventures" in 1993 and has become a zoological authority in his 30-plus years working at the Columbus Zoo and Aquarium in Ohio. On "Wild Countdown," he uses his knowledge and experience to present count-down lists of rare, fascinating creatures -- appropriate, given Hanna's many appearances on "Late Show With David Letterman." Topics include beasts equipped with armor, deceptively cute -- but dangerous -- animals, and adorable baby critters.