American bison by the numbers

(National Bison Association and U.S. Dept of Interior)
* Estimated size of the North American herd: 385,000.
* Estimated size prior to 1600: 30 million to 60 million
* Estimated number in mid-1880s: 700 to 1,000.
* Bison on tribal land today: 20,000
* 2025 Bison herd goal: 1 million.
* State with largest bison population: South Dakota, 33,000
* Oldest bison herd: Yellowstone National Park, 4,800. Herd has continuously existed since prehistoric times.
* Bison bulls weigh up to 2,000 pounds and stand six feet tall.
* Baby bison are called red dogs.
* Bison run 35 miles an hour.