In Belarusian it's indeed "амерыканскі бізон" and "еўрапейскі зубр" (American bison and European zubr). In everyday speech these are shortened to "bison" and "

In Belarusian it's indeed "амерыканскі бізон" and "еўрапейскі зубр" (American bison and European zubr). In everyday speech these are shortened to "bison" and "zubr". And buffalo (like African and water) is "буйвал". I had no idea American English used "buffalo" and "bison" interchangeably. Learn something every day. :)