NatGeo Wild

'S5/E2 - Wolf'. The wolf hones its hunting skills over about two years of intensive training-and the lessons are hard. Only the strongest survive to become leader of the pack.

'S4/E4 - Crocodile'. The crocodile is the world's largest reptilian predator, but it takes years of training to become lethal. Follow the transformation of a hatchling into a killer.

'S4/E1 - Lion'. Adult lions are 400 pounds of muscle, teeth and claw - lion cubs are four pounds of blind, toothless fluff. Follow the transformation of a cub into a killer.

'S1/E1 - Darkness'. In the battle between predator and prey, information is survival. Those with the power to see what comes their way, live to fight another day.

'S1/E4 - Survival'. Every day, wild animals face life or death challenges - deadly predators, fierce competitors, hunger and the elements. Sometimes, it takes a superpower to survive.

'S1/E3 - Deception'. Whether physical or behavioural, stealth is often an animal's only ticket to survival.

'S1/E6 - Defence'. For nature's most amazing animals, survival is a constant battle. They've honed surprising and powerful defences to make it through each day.

'S1/E5 - Secret Weapons'. Animals across the planet deploy secret weapons to outwit predators, rivals and the elements.

'S19/E6 - Cold Your Horses'. It's a real dog and pony show at Pol Vet - whether it's puppies or ponies, Pomeranians or pus, the docs mask up, glove up, and giddy up!

'S3/E5 - Turf Wars'. A badger finds some tasty fox cubs but then meets their protective father, and two Siamese fighting fish stop at nothing in a territorial fight.

'S5/E3 - Vet Muscle & Yukon Hustle'. Sometimes Dr. Oakley has to take a bull - or yak! - by the horns to get things done!

'S5/E4 - Crisis In The Yukon'. Dr. Oakley is on call, ready to roll and taking care of business, 24 hours a day!

'S5/E3 - Vet Muscle & Yukon Hustle'. Sometimes Dr. Oakley has to take a bull - or yak! - by the horns to get things done!

'S4/E3 - Psycho Mamba'. Simon and Siouxsie hunt down a frighteningly fast black mamba in a cluttered kitchen and a Mozambique spitting cobra under a bath that's showering Simon with venom.

'S4/E4 - Office Nightmare'. Simon and Siouxsie race across Snake City to save an office on lockdown after staff spot a green snake disappear under a door.

'S19/E7 - Game of Bones'. PVS faces flurries and furries when a Labrador and her housemate need urgent help, fair pigs get TLC, and there's double-cow trouble at a nearby dairy.

'S1/E4 - Survival'. Every day, wild animals face life or death challenges - deadly predators, fierce competitors, hunger and the elements. Sometimes, it takes a superpower to survive.

'S5/E3 - Vet Muscle & Yukon Hustle'. Sometimes Dr. Oakley has to take a bull - or yak! - by the horns to get things done!