With their large, sharp horns, bison are formidable foes. During mating season, bulls fight for the right to breed with harems of cows, but rarely duel to the death.

Close-Up of a Bison

With their large, sharp horns, bison are formidable foes. During mating season, bulls fight for the right to breed with harems of cows, but rarely duel to the death.
Photograph by Sam Abell

Bison

See bison pictures in this photo gallery from National Geographic.

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