The elk is the second largest species of deer in the world. Bulls, weighing in at about 700 pounds and standing five feet tall at the shoulder, shed and grow antlers every year. During the fall mating season, bull elk gather harems of females, bugling their their dominance to other males. European settlers reduced the population of elk from 10 million to less than 100,000 by 1900. Today, the population is increasing and there are about one million elk in the U.S and Canada.