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.

Animals go to extremes to survive when fight-or-flight instincts kick in and anything is possible.

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.

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

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.

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

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

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

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

A black bear chews a woman's kayak; elephants back a motorcyclist into a corner; a crocodile snatches an impala from a group of wild dogs.

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 whale gets frighteningly close to some kayakers; a day at the pool for a family of bears.

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

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

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.

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.

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

Beloved pets reveal their true selves in viral videos.

The fiercest life and death struggles in nature.

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.

Only the strongest survive in the animal kingdom, where the competition for food, territory or mates means employing skillfully crafted tricks of the trade. "Animal Armory" incorporates high-end imagery and computer graphics to reveal how wildlife use their teeth, claws, antlers, camouflage, venom and even spit to threaten and intimidate rivals and predators alike. With weapons of deception, animals disarm and entice prey to their death. Meanwhile, perhaps the oldest weapons employed by animals are projectiles, which have evolved into their own versions of poison-tipped harpoons, chemical missiles and high-powered bullets.

Chester Zoo is one of the most popular wildlife parks in Great Britain, attracting more than 1.8 million visitors annually. Through the use of cameras equipped with the latest technology, this program takes viewers behind the scenes of the zoo, capturing animal behavior close up, as well as the relationships the animals share with their keepers. Memorable scenes filmed over the course of the series include the birth of a baby giraffe, a pregnant viper getting X-rayed, chimps battling for dominance, and a red panda giving her partner the cold shoulder.

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.