Kukho iiklasi ezintathu ezahlukeneyo zobunzima beBoston Terrier. Ngenxa yoko, ubunzima bunokuba naphi na ukusuka kwisixhenxe ukuya kwi-11 kg.
#1 Umbala unokwahluka kakhulu.
Umbala we-brindle ngowona umelwe kakhulu. Ngaphandle koko, kukho umnyama kunye ne-tinge ebomvu okanye emnyama. Iimpawu ezimhlophe eziqhelekileyo ziyimpawu kwaye zinqwenelekayo.
#2 Idyasi emfutshane ngaphandle kwe-undercoat ilele kwaye ine-sheen encinci.
#3 Ukunyamekela kwesikhumba kulula kakhulu.
Kwanele ukuxubha inja kanye ngeveki kwaye ukhangele amehlo kunye neendlebe.