Ranger Investigates Animals Acting Strange on His Patrol – The Second He Realizes What It Means, He Tells Everyone to Run

When Mark cleared the tree line into High Meadow, he found a crowd had already gathered. A group of six tourists stood near the edge of the trail, holding up their phones and laughing. In the middle of the meadow, a herd of a dozen wild bighorn sheep were running in a tight, frantic circle. 

They moved in a continuous loop, each sheep blindly following the tail of the one in front of it, hooves churning the green grass into mud. Mark pushed through the brush and jogged toward the herd. Stepping into the path of the lead sheep, he raised his arms and caught a young ewe by the shoulders, forcing it to a stop. 

The animal quivered violently under his hands, its chest heaving. Its eyes darted frantically toward the treeline as if an invisible predator were about to leap out of the brush. "Is it sick?" one of the tourists called out, still filming. "No," Mark said, his eyes scanning the surrounding woods carefully. "It's terrified."