Largest Land Animal in North America: The American Bison

The American Bison (Bison bison)—often called buffalo—is the largest terrestrial animal in North America.

Subspecies & Size

Key Facts

  • Historic Range: Alaska to Mexico, Atlantic to Pacific (~30–60 million pre-1800).
  • Near Extinction: <1,000 by 1889 (commercial hide hunting, US Army policy).
  • Recovery: ~500,000 today (mostly managed herds; ~30,000 wild/conservation).
  • Ecological Role: Keystone grazer – creates habitat for birds, prairie dogs, plants; wallows = wetlands.
  • Cultural: Sacred to Plains Nations (Lakota, Blackfeet, etc.). National Mammal of USA (2016).

Marine Comparison

If marine animals count: Blue Whale (global, includes N. Pacific/Atlantic) – 150,000 kg. North Atlantic Right Whale – 70,000 kg. But on land, Bison is king.

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SubspeciesRangeMax Weight (Male)Shoulder HeightLength
Plains Bison (B. b. bison)Great Plains1,000 kg (2,200 lb)1.9 m (6.2 ft)3.5 m (11.5 ft)
Wood Bison (B. b. athabascae)Boreal NW Canada/Alaska1,100+ kg (2,400+ lb)2.0 m (6.6 ft)3.8 m (12.5 ft)