National Geographic WILD HD Wednesday

The glaciers concealed among the perilous peaks of western Montana

The entire zoo is on watch as an elephant goes into labour - which could take as long as 30 days. A dentist performs a root canal on a polar bear, and bats receive a medical exam

A deep dive into some of the craziest nature clips. Including a video of an octopus slapping a kayaker and a sea snake who wants to make friend

Highlights from the series featuring animals that rely on striking fear into their enemies to hunt prey or scare off predators

The vet takes the weekend to trade in his stethoscope for a fishing pole as he and Diane take a mini-vacation out on the open water

Aerial footage of railway journeys. In the opening episode, the Glacier Express is filmed from above, winding along alpine peaks as it connects St Moritz and Zermatt

Leaving one hive to start another, these hornets will sacrifice everything to help raise legions of grubs and protect the hive at all costs

The oddest creatures that Asia has to offer will go to any extreme for love, from incestuous dragons to kamikaze crabs, exploitative ants to seductive salmon

An alligator breaks out of its restraints during an annual medical examination. The keepers choose a name for a pregnant loris' baby and a sloth bear shows signs of a limp

Some wild sea turtles arrive in need of urgent care, a young rhino cracks his horn, the lions enjoy a new chew toy and a zebra gives birth

Michelle visits a bear sanctuary and gets caught up in a conflict between two animals. She also examines a horse that has problems with its gait

Special compilation episode focusing on female zookeepers. The team wrangles a huge polar bear and some very hungry Heart of Africa residents

Leaving one hive to start another, these hornets will sacrifice everything to help raise legions of grubs and protect the hive at all costs

Documentary featuring footage of real-life confrontations with other animals,revealing how each brush with death refines the honey badger's fearlessness

The nuclear meltdown at Three Mile Island, and a small truck fire that became a lethal inferno

As the temperatures drop and snow blankets the landscape, the locals demonstrate their skills and strategies for thriving in the harsh conditions of deep winter

Examining the world's most dangerous creatures

A nine-foot black mamba is found in a child's bed, Simon rescues an injured night adder, and Siouxsie gets spat at by a deadly cobra

While preparing for a family reunion, Dr. Pol treats a dog who has swallowed a rock and tries to work out why 10 bulls have suddenly gone lame

Dr Oakley introduces the new clinic kitten to her patients. Next, she sees a wolverine with a growing lump on its side and provides comfort to its worried owner

As the indigenous peoples of Alaska face a changing and unforgiving climate, they turn to the values of the past as a guide to their future

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