This little baby bison looks like it would be no match for a hungry wolf on the prowl at Yellowstone National Park.
But looks can be deceiving.
Separated from his mother during a river crossing and stranded on a small gravel island, the one-week-old bison becomes the target of a hungry wolf.
The calf stayed alone on the island for two full days, even with wolves prowling the riverside not far away. Near the end of the second day, just as it was getting dark, a wolf noticed the lone calf, and approached it for the kill.
His mother soon got to the scene – and the calf was safe from harm. Incredibly, the calf moved toward the wolf, as if challenging the creature, which moved away.