Yellowstone Wolves Surround and Harrass Bison

Dramatic footage of the Mollie's Pack wolves as they surround a mother bison who is defending her freshly slain calf. This encounter took place in Lamar Valley in May of 2024.
The Mollies Pack in Yellowstone National Park is a renowned group of gray wolves, known for their fascinating behaviors and significant role in the park’s ecosystem. Reintroduced in 1995 as part of a broader effort to restore wolves to Yellowstone, the pack has become an iconic symbol of successful wildlife management. The Mollies are particularly famous for their hunting prowess, territorial disputes, and interactions with other packs. Their presence helps maintain the balance of the park's ecosystem by controlling the population of elk and other herbivores, which in turn allows vegetation to flourish and supports biodiversity across the region.