Pronghorn Antelope are hoofed animals, otherwise known as ungulates. Both males and females have a pair of horns, with the females being only a few inches long. Males have 12 inch horns with a prong that juts forward and a pronounced black cheek and forehead. When alarmed, the guard hairs on their rump extend vertically, making the white patch increasingly visible. They are the fastest land animal in North America and can run up to 60 miles per hour!