This is often the case due to gestation periods. The gestation period averages out to about eight to eight and one half months. The Sonoran Pronghorn has many enemies. The causes of decline listed above are not the only enemies of the pronghorn. Some other enemies include coyotes, bobcats, mountain lions, and wild dogs.
Coyotes are the primary predators of fawns.
The pronghorn's speed and great eyesight are their best protection. Predation is a major problem in years where habitat and food supply are lacking for the predators. Some illegal hunting has occurred. Eleven pronghorn were killed in 1984 in Mexico. So, the pronghorn has some dangerous enemies.