MOVIE
How Wolves Change Rivers
Documentary
When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains.
Top cast
Below are the streaming services currently carrying the movie “How Wolves Change Rivers” in Canada, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in Canada can differ from other countries.
Where to watch How Wolves Change Rivers in Canada
Netflix
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OSN+
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Amazon Prime Video
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Shahid
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Watch It
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TOD
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Disney+
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Apple TV+
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Not currently available on the supported providers in Canada.
Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 16 Sept 2026.