- Bighorn ram: Found in North America, bighorn rams are known for their large, curled horns. They are typically brown or gray in color and can weigh up to 300 pounds.
- Dall sheep: Dall sheep are found in Alaska, Canada, and the Yukon Territory. They are smaller than bighorn rams, with an average weight of 200 pounds. Dall sheep are white in color with black horns.
- Stone sheep: Stone sheep are found in the Rocky Mountains of Canada and the United States. They are gray in color with brown or black horns. Stone sheep are slightly smaller than bighorn rams, with an average weight of 250 pounds.
- Marco Polo sheep: Marco Polo sheep are found in the Pamir Mountains of Central Asia. They are the largest of the wild sheep, with an average weight of 400 pounds. Marco Polo sheep are white in color with long, spiraling horns.
- Argali sheep: Argali sheep are found in the mountains of Central Asia. They are similar in size to Marco Polo sheep, but have shorter, more massive horns. Argali sheep are brown or gray in color.