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Very common in captivity, feral populations common, extent of status in the wild unclear; see Western honey bee for details 6a Hymenoptera: Domestic horse (Equus caballus) Extinct unknown population of the wild horse (Equus ferus), possibly the tarpan or European wild horse (E. f. ferus)† [38] 4000-3500 BCE [39] [40] Ukraine or Kazakhstan
The dog diverged from a now-extinct population of wolves 27,000–40,000 years ago immediately before the Last Glacial Maximum, [1] [2] when much of the mammoth steppe was cold and dry. The domestication of the dog was the process which led to the domestic dog.
Population sizes range from the Falkland Islands wolf, extinct since 1876, to the domestic dog, which has a worldwide population of over 1 billion. [1] The body forms of canids are similar, typically having long muzzles, upright ears, teeth adapted for cracking bones and slicing flesh, long legs, and bushy tails. [2]
[149] [150] In 2020, the estimated global dog population was between 700 million and 1 billion. [151] In the same year, a study found the dog to be the most popular pet in the United States, as they were present in 34 out of every 100 homes. [5] About 20% of the dog population live in developed countries. [152]
The domestic dog is a divergent subspecies of the gray wolf and was derived from an extinct population of Late Pleistocene wolves. [8] [31] [32] Through selective pressure and selective breeding, the domestic dog has developed into hundreds of varied breeds and shows more behavioral and morphological variation than any other land mammal. [33]
All canids have a similar basic form, as exemplified by the gray wolf, although the relative length of muzzle, limbs, ears, and tail vary considerably between species. With the exceptions of the bush dog, the raccoon dog and some domestic dog breeds, canids have relatively long legs and lithe bodies, adapted for chasing prey. The tails are ...
Dogue de Bordeaux. As the name implies, these expressive-faced big boys originated centuries ago in what is now France. The history of this breed, whose weight starts at 110 pounds, is fascinating ...
More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]