American bison (Bison bison)
Fifty million used to live in the wilds of the United States, but overhunting has pushed them to the brink of extinction. They migrate seasonally in large groups to the north in summer and to the south in winter, and males fight each other for dominance through intimidation and struggle.
| Classification. | Bovidae |
|---|---|
| distribution | North America |
| length of an animal (sometimes including and sometimes excluding the tail) | 2.5～3.8m |
| body weight (usu. one's own) | 400～1,000kg |