|A Pronghorn near Fort Rock, Oregon|
The Pronghorn has a yellowish-brown to reddish-brown colored fur with a white underside, and white stripes on the neck and around the mouth. Male pronghorns also have black markings on the neck and face. The males have horns that are up to 25 cm long. Females usually have no horns; if they have horns they are very short.
In summer, adult male pronghorns fight with other males for a territory. In this territory the male keeps a group of females with which he mates in September. Young males that do not yet fight for a territory form small groups, and old weak males live alone. Females live in groups of about 20 animals. When the female is close to giving birth, it leaves the group for a time to give birth to its offspring.
After a pregnancy of 8½ months the female gives birth to 1-2 babies, seldom 3. The babies hide for three days, and after a week they can run with their mother. A pronghorn baby has grey fur, and after 3 months it has the adult fur coloring. They drink milk for 5-6 months, and start to eat grass after three weeks. Females become mature when they are 15-16 months old, and males become mature when they are 24 months old.
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