Changes

At one time bison herds roamed the plains and valleys from western [[Canada]] down to [[Mexico]], serving an important part of [[Native American]] culture and survival, but were almost hunted to extinction by European settlers by 1900; in Europe the herds - once the subject of prehistoric art on cave walls - were decimated by over-hunting and war.  Conservation efforts during the 20th century managed to pull both species from the brink.

At one time bison herds roamed the plains and valleys from western [[Canada]] down to [[Mexico]], serving an important part of [[Native American]] culture and survival, but were almost hunted to extinction by European settlers by 1900; in Europe the herds - once the subject of prehistoric art on cave walls - were decimated by over-hunting and war.  Conservation efforts during the 20th century managed to pull both species from the brink.

===Species===

==Species==

There are two living species of the genus ''Bison'':

There are two living species of the genus ''Bison'':

*''Bison bison'', [[American bison]], or American buffalo; North America

*''Bison bison'', [[American bison]], or American buffalo; North America