There are 38 subspecies of Canis lupus listed in the taxonomic authority Mammal Species of the World. These subspecies were named over the past 250 years, and since their naming, a number of them have gone extinct. The nominate subspecies is the Eurasian wolf.
The dingo is an ancient (basal) lineage of dog found in Australia. Its taxonomic classification is debated as indicated by the variety of scientific names presently applied in different publications. It is variously considered a form of domestic dog not warranting recognition as a subspecies, a subspecies of dog or wolf, or a full species in its own right.
The New Guinea singing dog or New Guinea Highland dog is an ancient (basal) lineage of dog found in the New Guinea Highlands, on the island of New Guinea. Once considered to be a separate species in its own right, under the name Canis hallstromi, it is closely related to the Australian dingo. The dog is relatively unusual among canines; it is one of the few to be considered "barkless", and is known for the unusual "yodel"-like style of vocalizing that gives it its name.
The Carolina dog, also known as a yellow dog, yaller dog, American dingo, or Dixie dingo, is a breed of medium-sized dog occasionally found feral in the Southeastern United States, especially in isolated stretches of longleaf pines and cypress swamps. Efforts to establish them as a standardized breed have gained the Carolina Dog breed recognition in two smaller kennel clubs and full acceptance into the breed-establishment program of one major kennel club.
Canid hybrids are the result of interbreeding between the species of the subfamily Caninae.
The dog is a domesticated descendant of the wolf. Also called the domestic dog, it was selectively bred from an extinct population of wolves during the Late Pleistocene by hunter-gatherers. The dog was the first species to be domesticated by humans, over 14,000 years ago and before the development of agriculture. Experts estimate that due to their long association with humans, dogs have gained the ability to thrive on a starch-rich diet that would be inadequate for other canids.
The domestication of the dog was the process which led to the domestic dog. This included the dog's genetic divergence from the wolf, its domestication, and the emergence of the first dogs. Genetic studies suggest that all ancient and modern dogs share a common ancestry and descended from an ancient, now-extinct wolf population – or closely related wolf populations – which was distinct from the modern wolf lineage. The dog's similarity to the grey wolf is the result of substantial dog-into-wolf gene flow, with the modern grey wolf being the dog's nearest living relative. An extinct Late Pleistocene wolf may have been the ancestor of the dog.
The Hawaiian Poi Dog is an extinct breed of pariah dog from Hawaiʻi which was used by Native Hawaiians as a spiritual protector of children and as a source of food.
The Japanese wolf, also known as the Honshū wolf, is an extinct subspecies of the gray wolf that was once endemic to the islands of Honshū, Shikoku and Kyūshū in the Japanese archipelago.
The Kurī is an extinct breed of Polynesian Dog kept by Māori people. It was introduced to New Zealand by the Polynesian ancestors of the Māori during their migration from East Polynesia in the 13th century AD. According to Māori tradition, the demigod Māui transformed his brother-in-law Irawaru into the first dog.
A Dingo-dog hybrid is a cross between a dingo and a domestic dog. The current population of free ranging domestic dogs in Australia is probably higher than in the past. However, the proportion of the so-called "pure" dingoes has been on the decrease over the last few decades due to hybridisation and is regarded as further decreasing.
In the taxonomic treatment presented in the third (2005) edition of Mammal Species of the World, Canis lupus dingo is a taxonomic rank that includes both the dingo that is native to Australia and the New Guinea singing dog that is native to the New Guinea Highlands. It also includes some extinct dogs that were once found in coastal Papua New Guinea and the island of Java in the Indonesian Archipelago. In this treatment it is a subspecies of Canis lupus, the wolf, although other treatments consider the dog as a full species, with the dingo and its relatives either as a subspecies of the dog, a species in its own right, or simply as an unnamed variant or genetic clade within the larger population of dogs. The genetic evidence indicates that the dingo clade originated from East Asian domestic dogs and was introduced through the Malay Archipelago into Australia, with a common ancestry between the Australian dingo and the New Guinea singing dog. The New Guinea singing dog is genetically closer to those dingoes that live in southeastern Australia than to those that live in the northwest.
A free-ranging dog is a dog that is not confined to a yard or house. Free-ranging dogs include street dogs, village dogs, stray dogs, feral dogs, etc., and may be owned or unowned. The global dog population is estimated to be 900 million, of which around 20% are regarded as owned pets and therefore restrained.
During the Pleistocene, wolves were widely distributed across the Northern Hemisphere. Some Pleistocene wolves, such as Beringian wolves and those from Japan, exhibited large body size in comparison to modern gray wolf populations. Genetic analysis of the remains of Late Pleistocene wolves suggest that across their range populations of wolves maintained considerable gene flow between each other and thus there was limited genetic divergence between them. Modern wolves mostly draw their ancestry from some Siberian populations of Late Pleistocene gray wolves, which largely replaced other gray wolf populations after the Last Glacial Maximum.
Purported remains of "Paleolithic dogs" have been reported from several European archaeological sites dating to over 30,000 years ago. Their status as domesticated is highly controversial, with some authors suggesting them to be the ancestors of the domestic dog or an extinct, morphologically and genetically divergent wolf population.
Ellen Katharine Luomala was an American anthropologist known for her studies of comparative mythology in Oceania.
It is widely agreed that the evolutionary lineage of the grey wolf can be traced back 2 million years to the Early Pleistocene species Canis etruscus, and its successor the Middle Pleistocene Canis mosbachensis. The grey wolf Canis lupus is a highly adaptable species that is able to exist in a range of environments and which possesses a wide distribution across the Holarctic. Studies of modern grey wolves have identified distinct sub-populations that live in close proximity to each other. This variation in sub-populations is closely linked to differences in habitat – precipitation, temperature, vegetation, and prey specialization – which affect cranio-dental plasticity.
The Tahitian Dog is an extinct breed of dog from Tahiti and the Society Islands. Similar to other strains of Polynesian dogs, it was introduced to the Society Islands and Tahiti by the ancestors of the Tahitian (Mā’ohi) people during their migrations to Polynesia.
The Marquesan Dog or Marquesas Islands Dog is an extinct breed of dog from the Marquesas Islands. Similar to other strains of Polynesian dogs, it was introduced to the Marquesas by the ancestors of the Polynesian people during their migrations. Serving as tribal totems and religious symbols, they were sometimes consumed as meat although less frequently than in other parts of the Pacific because of their scarcity. These native dogs are thought to have become extinct before the arrival of Europeans, who did not record their presence on the islands. Petroglyphic representations of dogs and the archaeological remains of dog bones and burials are the only evidence that the breed ever existed. Modern dog populations on the island are the descendants of foreign breeds later reintroduced in the 19th century as companions for European settlers.
One of the major human migration events was the maritime settlement of the islands of the Indo-Pacific by the Austronesian peoples, believed to have started from at least 5,500 to 4,000 BP. These migrations were accompanied by a set of domesticated, semi-domesticated, and commensal plants and animals transported via outrigger ships and catamarans that enabled early Austronesians to thrive in the islands of Maritime Southeast Asia, Near Oceania (Melanesia), Remote Oceania, Madagascar, and the Comoros Islands.
