Both facing to the left while sitting on a branch and suddenly turns to the right and the other changed position facing to the right, Dusky Leaf Monkey Trachypithecus obscurus, Thailand

mammals animals wildlife nature trees arboreal primates langur national parks wildlife sanctuary thailand trachypithecus lutung endangered endangered species mammalia haplorhini simiiformes cercopithecidae habitat habitat loss leaves fruiting tree mongkeys morning branches foraging spectacled leaf monkey trachypithecus obscurus spectacled langur dusky leaf monkey monkeys primate apes long tail howling climbing rainforest jungle myanmar malaysia natural green kaeng krachan folivorous canopy forest