Multiple choice general knowledge Which animal used to roam in huge herds across the American West? American Sambar American Rats American Buffalo American Hare Reveal answer Fill a bubble to check yourself C Correct answer Explanation American buffalo (bison) formed massive herds numbering in the millions across the American West before European settlement. Sambars are Asian deer, and there are no 'American Rats' as a species. Hares do not form the kind of large herds described.