Gibbons are apes in the family Hylobatidae. The family historically contained one genus, but now is split into four extant genera and 20 species. Gibbons live in subtropical and tropical rainforests from eastern Bangladesh to Northeast India to southern China and Indonesia.
Nomascus is the second-most speciose genus of the gibbon family, Hylobatidae. Originally, this genus was a subgenus of Hylobates, with all individuals considered to be one species, H. concolor.
The Hatinh langur is a highly threatened Old World monkey found in limestone forests in Vietnam, primarily in the Quảng Bình Province. A recent survey discovered a small population living in the Quảng Trị Province. Contrary to its name, it is not known from the Hà Tĩnh Province. The local Van Kieu minority refer to this monkey as the 'Con Cung', which roughly translates as "black, cliff-dwelling monkey with a long tail". It resembles the closely related François' langur, but its white cheek-stripes typically extend behind the ears onto the nape, and the overall black colour is non-glossy and has a brownish tinge.
The black crested gibbon is a Critically Endangered species of gibbon found in China, Laos, and northern Vietnam, with four subspecies.
The eastern black-crested gibbon, also known as the Cao-vit black crested gibbon or the Cao-vit crested gibbon, is a species of gibbon from southeast China and northern Vietnam, with two subspecies. The term "Cao-vit" originated from the sounds of their calls or songs that villagers of Ngoc Khe, Phong Nam and Ngoc Con communes of Trung Khanh District, Cao Bang Province of Vietnam use to name for them.
The grey-shanked douc langur is a douc species native to the Vietnamese provinces of Quảng Nam, Quảng Ngãi, Bình Định, Kon Tum, and Gia Lai. The total population was estimated at 550 to 700 individuals in 2004. In 2016, Dr. Benjamin Rawson, Country Director of Fauna & Flora International's Vietnam Programme, announced a discovery of an additional population including more than 500 individuals found in Central Vietnam, bringing the total population up to approximately 1000 individuals.
The black-shanked douc is an endangered species of douc found mostly in the forests of Eastern Cambodia, with some smaller populations in Southern Vietnam. The region they are mostly found in is called the Annamite Range, a mountainous area that passes through Cambodia and Vietnam. Its habitat is mostly characterized by evergreen forest in the mountains, in the middle to upper canopy. They move around quadrupedally and by brachiation up in the trees. This species is unique with its coloration among the doucs as it has a bluish face with yellow rings around its eyes a blue scrotum and a pink penis. Like other doucs, this specie has a tail as long as its body and head length. Black-shanked douc have been observed in groups ranging from 3 to 30 individuals, depending on their habitat. Group tend to have a fission-fusion dynamic that changes with food availability. Their diet varies from dry to wet season. Regardless of the season, their diet consists mostly of leaves, but they have also been found to consume considerable amounts of fruits and flowers during wet season. The species changed conservation status in 2015 from endangered to critically endangered in the IUCN Red List of Endangered Species. This reassessment is due to an increase of the rate of population decline. No global population estimate exists. The majority of the population can be found in Cambodia, with smaller populations in Vietnam. In fact, the Wildlife Conservation Society reports almost 25,000 individuals in Cambodia's Keo Seima Wildlife Sanctuary, a population that has remained stable over the last decade. The largest populations estimated to be in Vietnam is around 500-600 individuals. The biggest challenges that the black-shanked douc faces in terms of conservation are habitat loss and illegal poaching. Conservation efforts are being made to control illegal poaching and trade in Vietnam by putting laws against hunting and trading threatened species.
The yellow-cheeked gibbon, also called the golden-cheeked gibbon, the yellow-cheeked crested gibbon, the golden-cheeked crested gibbon, the red-cheeked gibbon, or the buffed-cheeked gibbon, is a species of gibbon native to Vietnam, Laos, and Cambodia. The species was discovered and named after the British naturalist Gabrielle Maud Vassal.
The northern white-cheeked gibbon is a Critically Endangered species of gibbon native to South East Asia.
The wildlife of Laos encompasses the animals and plants found in the Lao People's Democratic Republic, a landlocked country in southeastern Asia. Part of the country is mountainous and much of it is still clad in tropical broadleaf forest. It has a great variety of animal and plant species.
Aglaia leptantha is a species of tree in the family Meliaceae. It is found in Mainland and Island Southeast Asia. People use the plant for food, incense, and for human and bovine medicine. Gibbons also eat parts of the tree.
Vũ Quang National Park is a national park in Vũ Quang District, Hà Tĩnh Province, North Central Coast, Vietnam. This park contains biodiversity. Saola and giant muntjac are species found in this park. Vũ Quang is a remote forested region of Vietnam, in which several new species of deer and antelope have been discovered since the 1990s. Some are so new that scientific description is still pending, although most have local names.
The Hainan black-crested gibbon or Hainan gibbon, is a Critically Endangered species of gibbon found only on Hainan Island, China. It was formerly considered a subspecies of the eastern black crested gibbon from Hòa Bình and Cao Bằng provinces of Vietnam and Jingxi County in Guangxi Zhuang Autonomous Region, China. Molecular data, together with morphology and call differences, suggest it is a separate species. Its habitat consists of broad-leaved forests and semi-deciduous monsoon forests. It feeds on ripe, sugar-rich fruit, such as figs and, at times, leaves, and insects.
The southern white-cheeked gibbon is a species of gibbon native to Vietnam and Laos. It is closely related to the northern white-cheeked gibbon and the yellow-cheeked gibbon ; it has previously been identified as a subspecies of each of these.
Bidoup Nui Ba National Park is a national park in districts of Đam Rông and Lạc Dương, in the province of Lâm Đồng, Vietnam.
The Popa langur is a species of primate in the family Cercopithecidae. It occurs only in Myanmar and was named after Mount Popa, where a population of 100 of the monkeys live. It is listed as Critically Endangered on the IUCN Red List, as the wild population is thought to comprise 200 to 250 mature individuals.
The Indochinese grey langur is a species of Old World monkey native to East and Southeast Asia.
