"Male bison (bulls) fight with each other to prove they are strong mates to the females of the herd," the NPS said in a Facebook post. "Bulls will mate with multiple females over the course of a ...

Male bison (bulls) fight with each other to prove they are strong mates to the females of the herd. Bulls will mate with multiple females over the course of a single season, however, female bison ...

Bison bulls can weigh in excess of 2000lbs, and the heads and forequarters are massive. Both sexes have short, curved horns that can grow up to 2 ft long, which they use in fighting for status ...

Calving season for bison is often called the season of the "cinnamon" calves due to their unique orange-red coloring. The bison herd at Hugh Butler Lake recently welcomed 20 new baby bison. The herd, ...

The bison, led by Seaton and a small crew, will hoof it across the frozen Innoko River. Full-size bulls confined in containers could become anxious, and brawly after deplaning, so they’ll arrive ...