African wild dog

The African wild dog, known scientifically as *Lycaon pictus* and also called the painted dog or Cape hunting dog, is a canine species found in sub-Saharan Africa. It holds the title of the largest wild canine on the continent and is the sole living member of the genus *Lycaon*. This genus differs from *Canis* due to teeth adapted for a strictly meat-based diet and the absence of dewclaws.

Roughly 6,600 adult African wild dogs exist, with about 1,400 of those being mature individuals. These animals are spread across 39 subpopulations, each facing threats from habitat fragmentation, human persecution, and disease outbreaks. Since the largest subpopulation likely contains fewer than 250 individuals, the species has been classified as endangered on the IUCN Red List since 1990.

This canine is a specialized predator of hoofed mammals, typically hunting around dawn and dusk, though it can also be active during the day. It relies on endurance and teamwork to wear down its prey. Its main rivals are lions, which will kill wild dogs when possible, and spotted hyenas, which often steal their kills. Like other canids, adults regurgitate food for their young, but they also do this for other adults, reinforcing the pack’s social bonds. Young dogs get the first chance to feed on carcasses.

Various hunter-gatherer societies, including the San people and those in prehistoric Egypt, have held the African wild dog in high regard.

**Etymology and naming** The African wild dog goes by several English names, such as African hunting dog, Cape hunting dog, painted hunting dog, painted dog, painted wolf, and painted lycaon. Although "African wild dog" is common, conservation groups argue that "wild dog" carries negative connotations that harm the animal’s image. One organization promotes "painted wolf," while research has shown that "painted dog" is most effective at countering negative perceptions.

**Taxonomic and evolutionary history**

**Taxonomy** The earliest known written mention of the species may come from Oppian, who described the *thoa*—a hybrid of wolf and leopard, with the wolf’s shape and the leopard’s color. In the third century AD, Solinus’s *Collectanea rerum memorabilium* depicted a multicolored, wolf-like animal with a mane from Ethiopia. The African wild dog was first scientifically described in 1820 by Coenraad Jacob Temminck, who examined a specimen from Mozambique’s coast and named it *Hyaena picta*. In 1827, Joshua Brookes recognized it as a canid and renamed it *Lycaon tricolor*. The genus name *Lycaon* comes from the Greek *lykaios*, meaning wolf-like, while the species name *pictus* (Latin for painted) was later restored to match taxonomic rules. Paleontologist George G. Simpson grouped the African wild dog, the dhole, and the bush dog into the subfamily Simocyoninae based on their similarly sharp carnassial teeth. Juliet Clutton-Brock challenged this, noting that aside from teeth, the three species differ too much to share a single subfamily.

**Evolution** Among canids, the African wild dog has the most specialized adaptations for coat color, diet, and running down prey. Its lightweight skeleton and the loss of the first digit on its front feet increase its stride and speed, letting it chase prey over long distances in open terrain. Its teeth are mostly carnassial-shaped, and its premolars are the largest relative to body size of any living carnivore except the spotted hyena. The lower carnassials have evolved a cutting blade for slicing flesh, with reduced or missing postcarnassial molars—a trait also seen in the dhole and bush dog. The species has some of the most varied coat colors among mammals, with individuals differing in patterns and hues, suggesting diverse underlying genes. These patterns may aid communication, concealment, or temperature regulation. A 2019 study found that the *Lycaon* lineage split from *Cuon* and *Canis* about 1.7 million years ago through these adaptations, coinciding with the diversification of large hoofed prey. The study also indicated that the African wild dog is largely isolated from gene exchange with other canids. The oldest known fossil of the African wild dog, dating back 200,000 years, was found in HaYonim Cave, Israel. Fossil finds are scarce, so its evolution is poorly understood. Some researchers consider the extinct *Canis* subgenus *Xenocyon*, which lived across Eurasia and Africa from the Early Pleistocene to the early Middle Pleistocene, as ancestral to both *Lycaon* and *Cuon*. Others suggest reclassifying *Xenocyon* as *Lycaon*. The species *Canis (Xenocyon) falconeri* shared the African wild dog’s missing dewclaw, but its teeth were less specialized. One author rejected this connection, arguing that the missing dewclaw is a weak sign of close relation and that the teeth were too different to indicate ancestry. Later studies of the canid genome showed that the dhole and African wild dog are closely related to members of the genus *Canis*, and that *Canis etruscus* (the Etruscan wolf) and *Canis mosbachensis*, ancestors of the grey wolf, are also ancestors of dholes and African wild dogs. Another possible ancestor is the Plio-Pleistocene *Lycaon sekowei* from South Africa, based on distinct extra cusps on its premolars and lower teeth.