The term 'Yellowstone Grazers' refers to the ELK that inhabit Yellowstone National Park. Elks, also known as wapiti, are the largest species of deer in North America and can be found in many parts of the United States and Canada. They are distinguished from other deer by their large size, long legs, and antlers. ELK are herbivores and graze on grasses, shrubs, and other vegetation. In Yellowstone National Park, ELK are a major part of the ecosystem and are an important food source for predators such as wolves and bears.