> ## Content Index
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# Guardians of Yellowstone: The Yellowstone Cougar Project
- URL: https://www.cascadepbs.org/show/guardians-of-yellowstone-the-yellowstone-cougar-project/specials/guardians-of-yellowstone-the-yellowstone-cougar-project-3wbesj/
- Published: 2025-12-10T08:05:27.000Z
- Updated: 2026-02-07T06:30:17.000Z
- Description: Learn about the biologists and the cougars involved in the Yellowstone Cougar Project.
- Author: Cascade PBS Staff
- Tags: Guardians of Yellowstone: The Yellowstone Cougar Project, #ZZZ_Show_0f4d1fad-9f10-4afe-a5cf-c2f3fc3093b5, #v1.7, #ZZZ_Special_e3086c3c-35bb-46a7-a80a-155b542ceb79, #special

For over 35 years, a dedicated team of biologists has quietly shaped one of the most enduring and impactful wildlife research programs in America. This film takes viewers deep into the wild heart of Yellowstone National Park to reveal the hidden lives of cougars—stealthy apex predators whose presence is vital to the health and balance of the ecosystem.