This record is for the oldest bison living in captivity.
This record is to be attempted by an American bison.
This record is measured in years and days.
For the purpose of this record, the American bison (Bison bison), is an American species of bison that once roamed North America in vast herds. Bison are often called buffalo, though this term is also used to refer to other bovines. Claims for water buffalo or African buffalo are monitored under other record titles.
For the purpose of this record, both subspecies are acceptable (B. b. bison)(B. b. athabascae).