The dusky leaf monkey, also known as the spectacled langur, or the spectacled leaf monkey is a species of primate in the family Cercopithecidae. It is found in Peninsular Malaysia, Myanmar and Thailand, and can occasionally be found in Singapore. During the day, these small, folivorous primates divide in sub-groups and forage for vegetation and fruit throughout the tropical forests. According to the IUCN, the dusky leaf monkey's population is declining due to habitat loss, poaching, and anthropogenic land use, which prompted the IUCN to classify the species as endangered in 2015. The Dusky leaf monkey is a lovely little primate with a unique appearance. The overall coloration of its fur is dark gray, though brownish fur may occur in certain subspecies. The animal exhibits large, white colored patches, surrounding its eyes and looking like sporting eyeglasses. Additionally, the monkey has a white colored circle around its mouth. This color pattern is supplemented by a light head crown and a creamy white stomach patch. The Dusky leaf monkeys are known to live up to 25 years in captivity. There is no information on the life expectancy of this species in the wild, although it's believed to be less than that of captive individuals.

Conservation status: Near Threatened (Population decreasing)

Scientific name: Trachypithecus obscurus

Trophic level: Herbivorous

Mass: 16 lbs (Adult) 

Gestation period: 147 days 

Length: 1.8 ft. (Adult)