They can run up to 65 miles per hour, making them the fastest North American land mammal. The hair shaft on pronghorns is hollow, which keeps them insulated in freezing climates. Pronghorns usually give birth to one or two babies, called fawns, who can outrun humans when they are just two days old. When Lewis and Clark first wrote about this animal, it is estimated that there were about 3.5 million, but that number has been reduced to 800,000, which is still better than the 13,000 believed to have been alive in 1915.
ronghorns are the second fastest land mammal in the world behind the cheetah.
Pronghorns have hollow hair shafts, which help insulate them in the cold.
A pronghorn baby, called fawns, usually weighs under 8 pounds when it is born.
Both bucks and does have horns, but bucks have longer ones.
Of the five subspecies of pronghorns, the peninsular pronghorn that lives in the Vizcaíno Desert of Baja is the rarest.
Pronghorns weigh between 90 and 130 pounds, with a very few bucks reaching 150 pounds. Females weigh about 10% less than bucks. Bucks usually are between 52.7and58.8inches long while does are between 50.5and58.5inches long. The tail on both sexes is between 3.5and5.5inches long.
The upper body and outer part of the pronghorn’s legs are lighttoreddish tan. This animal has white on its chest, stomach, inner legs, cheeks, lower jaw, and sides. It also has a large circular white patch on its rump. While most of the white blends in very well with the rest of the body, this animal’s two white blazes across its throat stand out. Bucks also have a black band from their eyes to their snouts and a black neck patch. This animal looks like it is wearing artificial eyelashes because they are absolutely black and very long.