One of my more popular stock images of late.
These bison are genetically pure and roam wild in Yellowstone National Park.
I got this photo one July morning as the bison crossed the river and took up position about 80 meters from me. It appeared to be a family group with newborn calf in tow. That big boy on the right was boss bison. You can still see the morning steam emanating from his fur in the direct sunlight.