Trio of Bighorn Sheep, Yellowstone, WY (Bighorn Sheep)

Bighorn Ram, Yellowstone, WY (Bighorn Rams)

Musk Ox Mother and Calf, Nome, Alaska (Muskox, Musk Oxen)

Musk Ox Mother and Calf, Nome, Alaska (Muskox, Musk Oxen)

Musk ox Family, Nome, Alaska (Muskox, Musk Oxen)

Musk Ox in Black and White, Nome, Alaska (Musk Oxen, muskox)

Young bisons tousling, Nebraska (Bison, Buffalo)

Bison Pair, Yellowstone (Buffalo)

Bison Meets Snowmobiler, West Yellowstone, Montana (Buffalo)

Musk Ox Calf, Nome, Alaska (Musk Oxen)