NatGeo Wild

'S1/E2 - Monsters Beneath'. Burrowers use bizarre solutions to survive in the cramped darkness.

Great white sharks, polar bears, lions and brown bears battle rivals and the elements to maintain their positions at the top of the food chain.

Intelligent, cultured and deadly, the killer whale dominates every ocean on Earth, and as our planet changes, this top predator changes with it.

In Guyana's rainforest, a jaguar must prove his worth to claim his throne.

'S1/E1 of 3 - Ugly By Design'. You don't have to be physically attractive to be well adapted. The weirdest of traits in nature are almost always functional, allowing the creature to thrive in their environment.

'S1/E2 of 3 - Under The Sea'. Inhabiting the ocean floors, coral reefs and coastlines around the world, they may not be the prettiest creatures, but those ugly attributes enable them to thrive in some of the harshest environments.

'S1/E3 of 3 - I Was Born This Way'. It's the weird who stand out in a crowd and despite sometimes being shunned through lack of understanding, they often have that extra special something that allows them to not only survive, but thrive.

'S1/E1 - Swallowed Alive'. In nature's underworld, some don't just hunt prey ... they swallow it whole.

'S1/E2 - Monsters Beneath'. Burrowers use bizarre solutions to survive in the cramped darkness.

'S21/E2 - Pol on Patrol'. When a sick dog can barely walk, the PVS vets are on the case.

'S5/E6 - Winner Takes All'. From love-struck Grizzlies, to raging buffalo, to a snake's mistaken identity and a double dose of gang warfare. The battles of the bravest, we see greed, revenge, love, hate & piracy

'S1/E1 - Freaks In The Ocean'. Hermaphrodite flatworms, a master-of-disguise octopus and a fish that 'walks' on dry land are among the unusual underwater critters examined.

'S1/E1 - Wild Mutants'. South America: the world's fourth largest continent is also one of the most diverse. To survive in the challenging landscape, nature has turned its back on convention. Freaks have inherited this land.

'Borneo's Secret Kingdom: Weird And Wild'. The Kinabatangan River sustains and binds together the lives of elephants, crocodiles, orangutans and hornbills.

'S4/E6 - Twice Bitten'. Simon and Siouxsie save an angry, and badly injured spitting cobra from someone's house and must take it to the vet for an amputation.

'S4/E8 - Slithering Heights'. Simon and Siouxsie chase down mambas all over the city and they call in the fire brigade to help Simon with one of his most dangerous captures yet!

'S21/E3 - A Hard Day's Bite'. PVS is busy with a sick shih tzu, boisterous camels, and a hungry iguana.

'S1/E2 of 3 - Under The Sea'. Inhabiting the ocean floors, coral reefs and coastlines around the world, they may not be the prettiest creatures, but those ugly attributes enable them to thrive in some of the harshest environments.

'S1/E1 - Freaks In The Ocean'. Hermaphrodite flatworms, a master-of-disguise octopus and a fish that 'walks' on dry land are among the unusual underwater critters examined.