Brehm saw the young of an African monkey (Cercopithecus) clinging to the under surface of their mother by their hands, and at the same time they hooked their little tails round that of their mother.

Brehm 看到一只非洲猴子 (Cercopithecus) 的幼崽用手紧贴在它们母亲的下表面， 同时它们的小尾巴勾住它们母亲的尾巴。