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Canidae is a biological family of dog-like carnivorans, colloquially referred to as dogs, and constitutes a clade. A member of this family is also called a canid. The family includes three subfamilies: the Caninae, and the extinct Borophaginae and Hesperocyoninae. The Caninae are known as canines, and include domestic dogs, wolves, coyotes, foxes, jackals and other species.
The wolf, also known as the gray wolf or grey wolf, is a canine native to Eurasia and North America. More than thirty subspecies of Canis lupus have been recognized, including the dog and dingo, though gray wolves, as popularly understood, only comprise naturally-occurring wild subspecies. The wolf is the largest wild extant member of the family Canidae, and is further distinguished from other Canis species by its less pointed ears and muzzle, as well as a shorter torso and a longer tail. The wolf is nonetheless related closely enough to smaller Canis species, such as the coyote and the golden jackal, to produce fertile hybrids with them. The wolf's fur is usually mottled white, brown, gray, and black, although subspecies in the arctic region may be nearly all white.
Dog breeding is the practice of mating selected dogs with the intention of maintaining or producing specific qualities and characteristics. When dogs reproduce without such human intervention, their offspring's characteristics are determined by natural selection, while "dog breeding" refers specifically to the artificial selection of dogs, in which dogs are intentionally bred by their owners. Breeding relies on the science of genetics, hence a breeder who is knowledgeable on canine genetics, health, and the intended purpose of the dogs attempts to breed suitable dogs.
A wolfdog is a canine produced by the mating of a domestic dog with a gray wolf, eastern wolf, red wolf, or Ethiopian wolf to produce a hybrid.
A bark is a sound most often produced by dogs. Other animals that make this noise include, but are not limited to, wolves, coyotes, foxes, seals, frogs, and barking owls. "Bark" is also a verb that describes the sound of many canids.
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 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.
Dog behavior is the internally coordinated responses of individuals or groups of domestic dogs to internal and external stimuli. It has been shaped by millennia of contact with humans and their lifestyles. As a result of this physical and social evolution, dogs have acquired the ability to understand and communicate with humans. Behavioral scientists have uncovered a wide range of social-cognitive abilities in domestic dogs.
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.
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.
Tumat is a rural locality, the only inhabited settlement and the administrative center of Tumatsky National Rural Okrug of Ust-Yansky District in the Sakha Republic, Russia, located 656 kilometers (408 mi) from Deputatsky, the administrative center of the district. Its population as of the 2010 Census was 533, of whom 286 were male and 247 female, down from 577 recorded during the 2002 Census.
The Yakutian Laika is an ancient working dog breed that originated in the Arctic seashore of the Sakha (Yakutia) Republic. Yakutian Laikas are multipurpose laikas, with many lineages able to herd reindeer, hunt game and/or pull a sled. They are registered with the Russian Kennel Club, the FCI and the AKC's Foundation Stock Service in 2017.
The Beringian wolf is an extinct population of wolf that lived during the Ice Age. It inhabited what is now modern-day Alaska, Yukon, and northern British Columbia. Some of these wolves survived well into the Holocene. The Beringian wolf is an ecomorph of the gray wolf and has been comprehensively studied using a range of scientific techniques, yielding new information on their prey species and feeding behaviors. It has been determined that these wolves are morphologically distinct from modern North American wolves and genetically basal to most modern and extinct wolves. The Beringian wolf has not been assigned a subspecies classification and its relationship with the extinct European cave wolf is not clear.
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.
The cave wolf is an extinct glacial mammoth steppe-adapted white wolf that lived during the Middle Pleistocene to the Late Pleistocene. It inhabited Europe, where its remains have been found in many caves. Its habitat included the mammoth steppe grasslands and boreal needle forests. This large wolf was short-legged compared to its body size, yet its leg size is comparable with that of the Arctic wolf C. l. arctos. Genetic evidence suggests that Late Pleistocene European wolves shared high genetic connectivity with contemporary wolves from Siberia, with continual gene flow from Siberian wolves into European wolves over the course of the Late Pleistocene. Modern European wolves derive most of their ancestry from Siberian wolf populations that expanded into Europe during and after the Last Glacial Maximum, but retain a minor fraction of their ancestry from earlier Late Pleistocene European wolves.
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.
Native American dogs, or Pre-Columbian dogs, were dogs living with people indigenous to the Americas. Arriving about 10,000 years ago alongside Paleo-Indians, today they make up a fraction of dog breeds that range from the Alaskan Malamute to the Peruvian Hairless Dog.
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 Bonn–Oberkassel dog was a Late Paleolithic dog whose skeletal remains were found buried alongside two humans. Discovered in early 1914 by quarry workers in Oberkassel, Bonn, Germany, the double burial site was analyzed by a team of archaeologists from the University of Bonn. It was around 7.5 months old at death, 40–50 cm (16–20 in) tall at the shoulder, and weighed 13–18 kg (29–40 lb), suggesting a slender build similar to West Asian wolves or some modern sighthounds.
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- ↑ "Amazingly preserved puppy with whiskers, eyelashes, hair and velvety nose intact puzzle scientists". Siberian Times. 25 November 2019. Retrieved 29 November 2019.
- 1 2 3 Woodyatt, Amy (27 November 2019). "18,000-year-old frozen puppy leaves scientists baffled". CNN Travel.
- 1 2 3 4 5 6 "Scientists stumped by 18,000-year-old frozen 'dog'". BBC News. 28 November 2019. Retrieved 28 November 2019.
- 1 2 3 Sparks, Hannah (27 November 2019). "18,000-year-old puppy stumps scientists: Is it a dog or a wolf?". New York Post. Retrieved 28 November 2019.
- ↑ "DNA of pre-historic puppy, found in Yakutia, to be analyzed in Denmark". Tass Russian News Agency. 12 October 2020. Retrieved 7 March 2021.
- ↑ Pappas, Stephanie (7 July 2022). "Mummified puppy that died 18,000 years ago was a wolf". Live Science.