American Bison
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American Bison (Bison bison bison) — The Woolly Prairie Tank
The American Bison (Bison bison bison) charges across North American grasslands as the continent's largest land mammal and official national mammal. Learn its habits, habitat, and wild recovery story.
- Habitat
- Open grasslands and prairies
- Size
- Bulls to 2,000 lbs, 6 ft at shoulder
- Diet
- Grasses, sedges, weeds, leafy plants
- Range
- Yellowstone and protected North American sites
- Conservation
- Near Threatened
- Lifespan
- 15–20 years in the wild
Habitat & Range
Picture vast, windswept grasslands where the American Bison once thundered in herds numbering in the tens of millions. These shaggy herbivores claim everything from shortgrass plains to tallgrass prairies, stretching historically from Alaska down to Mexican grasslands and east toward the Appalachians. Today, the biggest free-roaming populations cling to protected strongholds like Yellowstone, where their prehistoric lineage never broke, plus spots in Wind Cave, Theodore Roosevelt National Park, and scattered Tribal lands. A few adventurous herds still wander parts of Montana and Canada, though most live under watchful management that keeps the species thriving. American Bison appears as a Mammalia creature card in Wilder TCG.
Diet & Foraging
American Bison are dedicated grass connoisseurs, spending nine to eleven hours daily mowing down grasses, sedges, weeds, and leafy plants. Their massive shoulder hump works like a built-in snowplow in winter, letting them swing their heads to uncover hidden forage patches beneath deep drifts. By selectively nibbling native prairie species, they actually boost plant diversity instead of wiping it out, acting as living lawnmowers that keep the ecosystem balanced and vibrant.
Behavior & Adaptations
Don't let the bulk fool you—these giants hit 35 mph, pivot like dancers, clear fences in a single bound, and swim rivers without breaking a sweat. Herds split into cow-calf groups and bachelor bull crews, reuniting in summer for a noisy rut filled with bellows, dramatic wallowing, and mostly theatrical clashes. Wallowing in dust or mud sheds winter coats, deters bugs, and lets bulls broadcast their scent. Watch the tail: a casual swish means relaxed, but straight up signals serious attitude. Excellent hearing and smell more than make up for so-so eyesight, while their grunts and snorts echo across the plains like a lawnmower with opinions.
Conservation
Listed as Near Threatened, American Bison bounced back from near-extinction in the 1800s thanks to Tribes, ranchers, and agencies working together. Roughly 10,000-plus animals now roam public lands, though truly wild, large-scale herds remain rare because many populations stay small and isolated. As keystone engineers, their grazing, trampling, and wallowing create habitat mosaics that support everything from amphibians to birds, proving these woolly icons still shape the prairie in essential ways.
Fun facts about American Bison
- Calves arrive bright orange-red, earning the nickname 'red dogs' before turning chocolate brown within months.
- Their ancestors crossed the Bering land bridge 400,000 years ago; extinct relatives once sported nine-foot horn spans.
- Despite the fur coat, they sprint 35 mph, leap six feet high, and paddle rivers like Olympic swimmers.
- Bulls use mud wallows as personal cologne stations to advertise dominance during mating season.
- They're not true buffalo—that name belongs to African and Asian species—yet the mix-up stuck for centuries.
American Bison vs White Rhinoceros
White rhinoceros wins with greater size, thick hide, and powerful horn charges.
On open grasslands, the two heavy grazers might cross paths near a watering hole. The bison lowers its head and charges with curved horns, while the rhinoceros swings its massive body and brandishes a long forward horn. Both animals rely on thick skin and raw power rather than speed.
The rhinoceros outweighs the bison and carries a longer, sturdier horn suited for thrusting. After a brief clash of heads, the larger rhino drives forward, forcing the bison to retreat. The encounter ends with the bison yielding ground to avoid serious injury.
Mammalia · Grassland · Cost 5
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