
Heart of a Lion
Heart of a Lion follows cougar biologist Mark Elbroch into the parallel worlds of two mountain lion mothers: F61, who revealed their hidden social lives, and Yoko, struggling to raise her young on the edge of human encroachment. From the rugged wilderness of Wyoming’s Tetons to the misty forests of Washington’s Olympic Peninsula, this intimate and immersive journey reveals one of North America’s most misunderstood predators—asking us to see them with admiration instead of fear.
Why it matters
An immersive, atmospheric eco-horror that blurs the line between documentary reverence and predator thriller.
- Grounded in real-world natural history, it taps into primal fears of wilderness and the unknown.
- Two mountain lion matriarchs embody contrasting survival strategies, deepening the emotional stakes.
- Striking wilderness cinematography conjures a haunting, almost mythic mood.
- For fans of nature horror and slow-burn character studies that respect their animal subjects.
Director
Horror DNA
⚠ Limited data — scores are approximate
Gore 0
Slow Burn 33
Psychological 0
Supernatural 0
Creature 18
Disturbing 0
Fun Factor 17
Cerebral 28
Survival 17



