Two Bison (Bison bison) bulls sparring, Yellowstone National Park, Wyoming, United States of America, North America

travel destination photography color image horizontal two animals bison bison bison bull sparring yellowstone national park wyoming outdoors day full length side view standing brown national park animal themes wildlife animals in the wild male animal head to head rivalry confrontation aggression conflict usa us united states united states of america north america american north american colour image colour color image color outside travel destinations travel nobody no one no one