National Geographic WILD HD Wednesday

Dr Michelle Oakley treats a sled dog that had a nasty run-in with a porcupine, and the day takes a more positive turn when she tends to two Icelandic horses

Les Stroud follows the migration of Arctic Alaskan Caribou, one of the largest mass movements in the natural world, as thousands travel across the tundra at speeds of up to 50mph

The influence of the seasons on bears' bodies, allowing them to endure the very harshest of conditions but also driving them to extreme behaviour

Featuring a case of mistaken identity involving a snake, fights between packs of animals, and footage of raging buffalo and grizzly bears

While Animal Control shadow Dr Pol around town, the PVS vets treat a cat's leg wound and a German Shepherd that is so sick it can barely walk

Dr Oakley treats a limping bison and a litter of puppies struggling to survive

In a single night, darkness sweeps the globe, from Indonesia's jungles to America's swamps, and new battles rage between predators and prey

Fast & Furious star Paul Walker joins the team as it travels to Guadalupe Island, off the west coast of Mexico, to discover the fate of four great whites it tagged a year earlier

The fire brigade helps out with a dangerous capture, as Simon and Siouxsie hunt down mambas all over the city

With all the emergency agencies involved in a simulated plane crash exercise, real problems place airport operations in jeopardy

Dr Oakley is kept busy as she sees a horse with a limp, performs pregnancy checks on a group of goats, and treats an overweight dog

The Florida team fight to keep their most critical injured and orphaned manatees alive, as a growing Siamang declares her independence

A global effort to save the northern white rhinoceros from extinction. With only two surviving females, scientists race to create the world's first surrogate rhino pregnancy

Entertainment reporter Billy Bush joins a patrol protecting Greater One-horned rhinos from illegal poaching

Joel builds a bridge, Marvin and his nephew hunt for winter fur, Jody trains her young dog team and Tig teaches his daughter how to harvest fur

Documentary following a team of salvage truck drivers as they risk their lives to keep the roads safe during the treacherous winter months in Norway and Sweden

A boa constrictor that may be pregnant escapes during an x-ray. The vets also treat baby raccoons rescued from a construction site and some squabbling pet rabbits

Zeb Hogan searches for the two largest species of eel, which can live for over 100 years

It's a real dog and pony show at Pol Vet: whether it's puppies or ponies, poms or pus, the docs mask up, glove up, and giddy up

Dr Oakley operates on an unusual mass and investigates a musk ox with a hair loss problem

Ecologist Zeb Hogan dodges flying fish as he examines the Asian carp that have invaded America's waterways

A chance to buy goods from the comfort of home