8.5Returning SeriesDocumentary

Evolution

All the incredible diversity of animal life sprang from a single organism. Every animal, no matter how weird, is related to every other. And behind each species is an incredible story of the millions of generations that gave rise to it - every animal we know and love today sprang from creatures that looked nothing like it.

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5. The Horse

0.0Aug 10, 2026 · 59 min

How did the horse become so fast? Chris Packham sets out on a slithering, swimming, sprinting odyssey that explores the evolutionary beginnings of animal movement and how it reached its peak in one of the most elegant and athletic animals on Earth: the horse.