Trachypithecus cristatus (Primates: Cercopithecidae)

Trachypithecus cristatus (Raffles, 1821), silvered lutung, is a colobine monkey of the Malay Peninsula and Archipelago. It has a pointed crest and outward-projecting cheek hairs, and gray skin and pelage with some grayish white hairs that are lighter distally, giving a silvered appearance. Diurnal and arboreal, it runs and jumps quadrupedally, with limited semibrachiation. Its large stomach and foregut fermentation allow it to digest a diet with a high proportion of leaves. It lives in single male–multifemale groups and smaller multimale groups in a polygynous, cooperative-breeding mating system. As with other nonhuman primates, it is threatened throughout its range by logging, hunting for meat and medicinal uses, and capture for the pet trade.