Dog

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Dog
Temporal range: 0.0142–0 
Ma
Late Pleistocene to present[1]
Domesticated
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Canidae
Genus: Canis
Species:
C. familiaris
Binomial name
Canis familiaris
Synonyms[3]
List
  • C. aegyptius Linnaeus, 1758
  • C. alco C. E. H. Smith, 1839,
  • C. americanus Gmelin, 1792
  • C. anglicus Gmelin, 1792
  • C. antarcticus Gmelin, 1792
  • C. aprinus Gmelin, 1792
  • C. aquaticus Linnaeus, 1758
  • C. aquatilis Gmelin, 1792
  • C. avicularis Gmelin, 1792
  • C. borealis C. E. H. Smith, 1839
  • C. brevipilis Gmelin, 1792
  • C. cursorius Gmelin, 1792
  • C. domesticus Linnaeus, 1758
  • C. extrarius Gmelin, 1792
  • C. ferus C. E. H. Smith, 1839
  • C. fricator Gmelin, 1792
  • C. fricatrix Linnaeus, 1758
  • C. fuillus Gmelin, 1792
  • C. gallicus Gmelin, 1792
  • C. glaucus C. E. H. Smith, 1839
  • C. graius Linnaeus, 1758
  • C. grajus Gmelin, 1792
  • C. hagenbecki Krumbiegel, 1950
  • C. haitensis C. E. H. Smith, 1839
  • C. hibernicus Gmelin, 1792
  • C. hirsutus Gmelin, 1792
  • C. hybridus Gmelin, 1792
  • C. islandicus Gmelin, 1792
  • C. italicus Gmelin, 1792
  • C. laniarius Gmelin, 1792
  • C. leoninus Gmelin, 1792
  • C. leporarius C. E. H. Smith, 1839
  • C. lupus familiaris Linnaeus,1758
  • C. major Gmelin, 1792
  • C. mastinus Linnaeus, 1758
  • C. melitacus Gmelin, 1792
  • C. melitaeus Linnaeus, 1758
  • C. minor Gmelin, 1792
  • C. molossus Gmelin, 1792
  • C. mustelinus Linnaeus, 1758
  • C. obesus Gmelin, 1792
  • C. orientalis Gmelin, 1792
  • C. pacificus C. E. H. Smith, 1839
  • C. plancus Gmelin, 1792
  • C. pomeranus Gmelin, 1792
  • C. sagaces C. E. H. Smith, 1839
  • C. sanguinarius C. E. H. Smith, 1839
  • C. sagax Linnaeus, 1758
  • C. scoticus Gmelin, 1792
  • C. sibiricus Gmelin, 1792
  • C. suillus C. E. H. Smith, 1839
  • C. terraenovae C. E. H. Smith, 1839
  • C. terrarius C. E. H. Smith, 1839
  • C. turcicus Gmelin, 1792
  • C. urcani C. E. H. Smith, 1839
  • C. variegatus Gmelin, 1792
  • C. venaticus Gmelin, 1792
  • C. vertegus Gmelin, 1792

The dog (Canis familiaris or Canis lupus familiaris) is a

domesticated descendant of the wolf. Also called the domestic dog, it is derived from extinct gray wolves, and the gray wolf is the dog's closest living relative. The dog was the first species to be domesticated by humans. Experts estimate that hunter-gatherers domesticated dogs more than 15,000 years ago, which was before the development of agriculture. Due to their long association with humans, dogs have expanded to a large number of domestic individuals and gained the ability to thrive on a starch-rich diet that would be inadequate for other canids.[4]

The dog has been

aiding disabled people. Over the millennia, dogs became uniquely adapted to human behavior, and the human–canine bond has been a topic of frequent study. This influence on human society has given them the sobriquet of "man's best friend
".

Taxonomy

In 1758, the Swedish botanist and zoologist

canid.[7]

In 1999, a study of

junior synonym) for the dingo. Wozencraft referred to the mtDNA study as one of the guides informing his decision.[3] Mammalogists have noted the inclusion of familiaris and dingo together under the "domestic dog" clade[9] with some debating it.[10]

In 2019, a workshop hosted by the

feral Canis familiaris and therefore did not assess them for the IUCN Red List of Threatened Species.[11]

Evolution

Location of a dog's carnassials; the inside of the 4th upper premolar aligns with the outside of the 1st lower molar, working like scissor blades.

Domestication

The earliest remains generally accepted to be those of a domesticated dog were discovered in Bonn-Oberkassel, Germany. Contextual, isotopic, genetic, and morphological evidence shows that this dog was not a local wolf.[12] The dog was dated to 14,223 years ago and was found buried along with a man and a woman, all three having been sprayed with red hematite powder and buried under large, thick basalt blocks. The dog had died of canine distemper.[13] Earlier remains dating back to 30,000 years ago have been described as Paleolithic dogs, but their status as dogs or wolves remains debated[14] because considerable morphological diversity existed among wolves during the Late Pleistocene.[1]

This timing indicates that the dog was the first species to be domesticated

DNA sequences show that all ancient and modern dogs share a common ancestry and descended from an ancient, extinct wolf population which was distinct from the modern wolf lineage.[18][17]

The dog is a classic example of a domestic animal that likely travelled a

ancient North Siberians, then later dispersed eastward into the Americas and westward across Eurasia,[12] with dogs likely accompanying the first humans to inhabit the Americas.[12]

Breeds

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