Inside the frantic physics of tiny animals racing to stay alive.
Discover how shrews, hummingbirds, and porpoises survive on a razor-thin energy budget, where missing a meal can be fatal. This film reveals how high metabolisms shape speed, perception, hunting, and even life span, turning familiar animals into astonishing examples of biological tradeoffs. Sign up to see nature's smallest warm-blooded specialists from a whole new angle.
Frequently asked questions
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Curiosity Stream is our streaming service — thousands of documentaries and originals. The Smart Bundle is Curiosity Stream plus four other independent streaming services (Tastemade, Kidstream, Curiosity University, and SOMM TV) on a single subscription.
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