The red colobus monkey is a medium sized primate. It inhabits the forests of Africa, from Senegal to Tanzania, the majority of which live on Pemba Island in the Zanzibar archipelago. The monkey's diet mainly consists of fruit and leaves, many of which are toxic. To solve this problem, the primates eat burnt wood, which puts them into contact with charcoal merchants. Humans encroach upon the monkey's habitat and kill it for its meat, while its natural predators include leopards, eagles, chimps and pythons. The word colobus means "mutilated" in Greek, because the monkeys haven't got any thumbs. This makes them more nimble in the trees and their four fingers act like grappling hooks.