Tom Vezo / Pronghorn Antelope (Antilocapra americana) portrait in dry grass, Yellowstone National Park, Wyoming

Sumio Harada / Pronghorn Antelope (Antilocapra americana) standing in snow, North America

Sumio Harada / Pronghorn Antelope (Antilocapra americana) herd beneath mountains, Gallatin National Forest, southern Montana

Sumio Harada / Pronghorn Antelope (Antilocapra americana) portrait, side view, North America

Jim Brandenburg / Pronghorn Antelope (Antilocapra americana) group silhouetted on horizon, South Dakota

Jim Brandenburg / Pronghorn Antelope (Antilocapra americana) herd on prairie, South Dakota

Jim Brandenburg / Pronghorn Antelope (Antilocapra americana) resting in grass, South Dakota

Michael Quinton / Pronghorn Antelope (Antilocapra americana) adult portrait in the fall, Montana

Sumio Harada / Gray Wolf (Canis lupus) with Pronghorn Antelope (Antilocapra americana) herd running in the background, Yellowstone National Park, Wyoming

Todd Mintz / Pronghorn antelope (Antilocapra americana) in landscape beside water, Saskatchewan, Canada.

Donald M. Jones / Pronghorn Antelope (Antilocapra americana) male, eastern Montana

Donald M. Jones / Pronghorn Antelope (Antilocapra americana) male and female, eastern Montana

Donald M. Jones / Pronghorn Antelope (Antilocapra americana) male, eastern Montana