Rocky Mountain bighorn sheep are the largest sheep in North America. Males can weigh over 300 pounds and stand over three feet tall at the shoulder.
The Rams Curl
When males fight for dominance they run at each other, rear up on their hind legs, and clash their horns together. These horns can weigh up to 30lbs and are made entirely of keratin, the same material our hair and fingernails are made of. Growth lines on the horns are often used to determine age on the sheep. The horns grow more during times of plentiful food such as spring and summer and grow less during winter creating distinct grow lines. A fully mature ram will have horns that curl all the way around back to his eyes, also called a Full Curl. If this begins to impair his vision he will break the tips off himself.
Common Name Bighorn Sheep
Scientific Name Ovis canadensis
Status Least Concern
Geographic Range Found in the Rocky Mountains, southern Canada, the desert southwest and Texas.
Life Span About 10 years in the wild, up to 20 in captivity
Offspring 1 - 2 Lambs