1. (relatively small fast-moving sloth with two long claws on each front foot)
leniwiec dwupalczasty, unau
synonim: two-toed sloth
synonim: unai
synonim: Choloepus didactylus

2. (a sloth of Central America that has two long claws on each forefoot and three long claws on each hindfoot)
leniwiec krótkoszyi, leniwiec Hoffmana: : synonim: two-toed sloth
synonim: unai
synonim: Choloepus hoffmanni