The crossword solution for the term AI OR UNAU is SLOTH. SLOTH is an animal that belongs to the Xenarthra order, which includes anteaters and armadillos. It is a slow-moving mammal that lives in trees and feeds on leaves, buds, and fruits. Sloths are known for their slow movements and long claws, which help them hang onto branches. They are also known for their low metabolic rate, which helps them conserve energy.