The pronghorn has also been called an antelope or pronghorn antelope. They are not related to the antelope, but resemble them. Pronghorns are a single species found in bush, sage and grassland areas in the western United States. They are hoofed animals with black horns made of bone sheathed in keritan. The horns grow throughout their life, shedding the keratin each year while the bony core remains. Pronghorns all have white on their cheeks, lower jaw, sides, and rump patch, along with two white stripes across their neck. The buck has a broad black band from his eyes down the snout to nose. They have keen eyesight with a wide field of vision. Pronghorns are active day and night, keeping a guard while they eat in open areas. When alarmed, their rump hairs stand up, if they have to flee, the buck takes the rear as a guard. They are considered the second fastest animal in the world next to cheetahs, clocked up to 70 miles per hour. They can leap 20 feet and maintain a cruising speed of 30 miles per hour for 15 minutes. They are generally built for speed, not for jumping though. Pronghorns are herbivores, they a can be prey to bobcats and coyotes. I took these pictures in Bellemont, Arizona, just West of Flagstaff.