Uploaded April 2026 | Updated September 2026, 3 weeks ago

---

The bison that have lived in Yellowstone since the last age are well adapted to the harsh winters here. But other animals – such as the elk – struggle to survive in such extreme weather, making them an easy target for wolves looking for dinner.

Subscribe: bit.ly/BBCStudios

WATCH MORE:
Hiroshima: bit.ly/BBCHiroshima
Horizon: bit.ly/BBCHorizon
Best of Alan Partridge: bit.ly/BestOfAlanPartridge
Harry Enfield and Chums: bit.ly/HarryEnfieldAndChums

Welcome to BBC Studios, bringing you the best of British TV! Here you'll find classic comedy, gripping drama, as well as the best documentaries, science and history! Take a look at complete listings for all our shows - we've got plenty to keep you entertained!

This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: bbcstudios.com/contact/contact-us