The Dhole (Cuon alpinus) is a canid native to Central, South, East, and Southeast Asia. Other English names for the species include Asian wild dog, Asiatic wild dog, Indian wild dog, whistling dog, red dog, and mountain wolf. It is genetically close to species within the genus Canis. During the Pleistocene, the dhole ranged throughout Asia, Europe, and North America but became restricted to its historical range 12,000–18,000 years ago.

The dhole is a highly social animal, living in large clans without rigid dominance hierarchies and containing multiple breeding females. Such clans usually consist of about 12 individuals, but groups of over 40 are known. It is a diurnal pack hunter which preferentially targets medium- and large-sized ungulates. In tropical forests, the dhole competes with the tiger (Panthera tigris) and the leopard (Panthera pardus), targeting somewhat different prey species, but still with substantial dietary overlap.

In 2021, the analyses of the mitochondrial genomes extracted from the fossil remains of two extinct European dhole specimens from the Jáchymka cave, Czech Republic dated 35,000–45,000 years old indicate that these were genetically basal to modern dholes and possessed much greater genetic diversity.

The dhole's distinctive morphology has been a source of much confusion in determining the species' systematic position among the Canidae. George Simpson placed the dhole in the subfamily Simocyoninae alongside the African wild dog and the bush dog, on account of all three species' similar dentition. Subsequent authors, including Juliet Clutton-Brock, noted greater morphological similarities to canids of the genera Canis, Dusicyon, and Alopex than to either Speothos or Lycaon, with any resemblance to the latter two being due to convergent evolution.

Some authors consider the extinct Canis subgenus Xenocyon as ancestral to both the genus Lycaon and the genus Cuon.  Subsequent studies on the canid genome revealed that the dhole and African wild dog are closely related to members of the genus Canis. This closeness to Canis may have been confirmed in a menagerie in Madras, where according to zoologist Reginald Innes Pocock there is a record of a dhole that interbred with a golden jackal.

In 2018, whole genome sequencing was used to compare all members (apart from the black-backed and side-striped jackals) of the genus Canis, along with the dhole and the African wild dog (Lycaon pictus). There was strong evidence of ancient genetic admixture between the dhole and the African wild dog. Today, their ranges are remote from each other; however, during the Pleistocene era the dhole could be found as far west as Europe. The study proposes that the dhole's distribution may have once included the Middle East, from where it may have admixed with the African wild dog in North Africa. However, there is no evidence of the dhole having existed in the Middle East nor North Africa.

Historically, up to ten subspecies of dholes have been recognised. As of 2005, seven subspecies are recognised.

However, studies on the dhole's mtDNA and microsatellite genotype showed no clear subspecific distinctions. Nevertheless, two major phylogeographic groupings were discovered in dholes of the Asian mainland, which likely diverged during a glaciation event. One population extends from South, Central and North India (south of the Ganges) into Myanmar, and the other extends from India north of the Ganges into northeastern India, Myanmar, Thailand and the Malaysian Peninsula. The origin of dholes in Sumatra and Java is, as of 2005, unclear, as they show greater relatedness to dholes in India, Myanmar and China rather than with those in nearby Malaysia. However, the Canid Specialist Group of the International Union for the Conservation of Nature (IUCN) states that further research is needed because all of the samples were from the southern part of this species' range and the Tien Shan subspecies has distinct morphology.

The dhole can be found in Tibet and possibly also in North Korea and Pakistan. It once inhabited the alpine steppes extending into Kashmir to the Ladakh area. In Central Asia, the dhole primarily inhabits mountainous areas; in the western part of its range, it lives mostly in alpine meadows and high-montane steppes, while in the east, it mainly ranges in montane taigas, and is sometimes sighted along coastlines. In India, Myanmar, Indochina, Indonesia and China, it prefers forested areas in alpine zones and is occasionally sighted in plains regions. In the Pamir Mountains of southern Kyrgyzstan, the presence of the dhole was confirmed in 2019.

The dhole might still be present in the Tunkinsky National Park in extreme southern Siberia near Lake Baikal. It possibly still lives in the Primorsky Krai province in far eastern Russia, where it was considered a rare and endangered species in 2004, with unconfirmed reports in the Pikthsa-Tigrovy Dom protected forest area; no sighting was reported in other areas since the late 1970s. Currently, no other recent reports are confirmed of dhole being present in Russia. However, the dhole might be present in the eastern Sayan Mountains and in the TransBaikal region; it has been sighted in Tofalaria in the Irkutsk Oblast, the Republic of Buryatia and Zabaykalsky Krai .

One pack was sighted in the Qilian Mountains in 2006. In 2011 to 2013, local government officials and herders reported the presence of several dhole packs at elevations of 2,000 to 3,500 m (6,600 to 11,500 ft) near Taxkorgan Nature Reserve in the Xinjiang Autonomous Region. Several packs and a female adult with pups were also recorded by camera traps at elevations of around 2,500 to 4,000 m (8,200 to 13,100 ft) in Yanchiwan National Nature Reserve in the northern Gansu Province in 2013–2014. Dholes have been also reported in the Altyn-Tagh Mountains.

In China's Yunnan Province, dholes were recorded in Baima Xueshan Nature Reserve in 2010–2011. Dhole samples were obtained in Jiangxi Province in 2013.[ Confirmed records by camera-trapping since 2008 have occurred in southern and western Gansu province, southern Shaanxi province, southern Qinghai province, southern and western Yunnan province, western Sichuan province, the southern Xinjiang Autonomous Region and in the Southeastern Tibet Autonomoous Region. There are also historical records of dhole dating to 1521–1935 in Hainan Island, but the species is no longer present and is estimated to have become extinct around 1942.

The dhole occurs in most of India south of the Ganges, particularly in the Central Indian Highlands and the Western and Eastern Ghats. It is also present in Arunachal Pradesh, Assam, Meghalaya, and West Bengal and in the Indo-Gangetic Plain's Terai region. Dhole populations in the Himalayas and northwest India are fragmented.

In 2011, dhole packs were recorded by camera traps in the Chitwan National Park. Its presence was confirmed in the Kanchenjunga Conservation Area in 2011 by camera traps. In February 2020, dholes were sighted in the Vansda National Park, with camera traps confirming the presence of two individuals in May of the same year. This was the first confirmed sighting of dholes in Gujarat since 1970. In Bhutan, the dhole is present in Jigme Dorji National Park.

In Bangladesh, it inhabits forest reserves in the Sylhet area, as well the Chittagong Hill Tracts in the southeast. Recent camera trap photos in the Chittagong in 2016 showed the continued presence of the dhole. These regions probably do not harbour a viable population, as mostly small groups or solitary individuals were sighted. In Myanmar, the dhole is present in several protected areas. In 2015, dholes and tigers were recorded by camera-traps for the first time in the hill forests of Karen State.

Its range is highly fragmented in the Malaysian Peninsula, Sumatra, Java, Vietnam and Thailand. In 2014, camera trap videos in the montane tropical forests at 2,000 m (6,600 ft) in the Kerinci Seblat National Park in Sumatra revealed its continued presence. A camera trapping survey in the Khao Ang Rue Nai Wildlife Sanctuary in Thailand from January 2008 to February 2010 documented one healthy dhole pack. In northern Laos, dholes were studied in Nam Et-Phou Louey National Protected Area. Camera trap surveys from 2012 to 2017 recorded dholes in the same Nam Et-Phou Louey National Protected Area.

In Vietnam, dholes were sighted only in Pu Mat National Park in 1999, in Yok Don National Park in 2003 and 2004; and in Ninh Thuan Province in 2014. In 2019, scat samples collected in the Bek-Tosot Conservancy in Kyrgyzstan confirmed the continued presence of dholes in the area. This was the first record of dholes from the country in almost three decades.

A disjunct dhole population was reported in the area of Trabzon and Rize in northeastern Turkey near the border with Georgia in the 1990s. This report was not considered to be reliable. One single individual was claimed to have been shot in 2013 in the nearby Kabardino-Balkaria Republic in the central Caucasus; its remains were analysed in May 2015 by a biologist from the Kabardino-Balkarian State University, who concluded that the skull was indeed that of a dhole. In August 2015, researchers from the National Museum of Natural History and the Karadeniz Technical University started an expedition to track and document this possible Turkish population of dhole. In October 2015, they concluded that no real evidence exists of a living dhole population in Turkey or in the Kabardino-Balkaria Republic, pending DNA analysis of samples from the original 1994 skins.

Indochinese Dhole (Cuon alpinus infuscus) - seen mainly in Khao Yai National Park Thailand