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Line 59: − Fossils of canine skulls smaller than those of wolves have been found with human artifacts, with dates based on evolutionary assumptions estimated to between 130,000 and 190,000 years ago.<ref name="DK">Kingsley, Danny, [http://www.abc.net.au/science/news/stories/s513072.htm Humans live a dog's life]</ref> whilst DNA evidence has been used to suggest that dogs diverged from wolves between 100,000 and 135,000 years ago.<ref name="DK" /> − <ref>Vila, Carles; Carles Vila, Peter Savolainen, Jesus E. Maldonado, Isabel R. Amorim, John E. Rice, Rodney L. Honeycutt, Keith A. Crandall, Joakim Lundeberg, Wayne, Robert F. (1997-01-30; accepted 1997-04-14). [http://www.mnh.si.edu/GeneticsLab/StaffPage/MaldonadoJ/PublicationsCV/Science_Dog_Paper.pdf Multiple and ancient origins of the domestic dog], ''Science'' 276: 1687-1689. Retrieved on 2006-12-09.</ref> − Secular archeology has placed the earliest known domestication at potentially 12,000 BC-10,000 BC and with certainty at 7,000 BC.<ref>Scott, John Paul (1965), Dog behavior: The genetic basis, University of Chicago Press. ISBN 0-226-74338-1.</ref>
remove ahistorical, anti-Biblical, LPOV
Dogs (scientific name ''Canis lupus familiaris'') are a subspecies of [[wolf|wolves]], divided into a multitude of different breeds all in principle capable of interbreeding (though in some cases, physical relations between representatives of two breeds are unlikely or problematic - Chihuahuas and Great Danes, for example).
Dogs (scientific name ''Canis lupus familiaris'') are a subspecies of [[wolf|wolves]], divided into a multitude of different breeds all in principle capable of interbreeding (though in some cases, physical relations between representatives of two breeds are unlikely or problematic - Chihuahuas and Great Danes, for example).
[[File:Chow chow.jpg|thumbnail|right|200px|Chow Chow]]
[[File:Chow chow.jpg|thumbnail|right|200px|Chow Chow]]
Dogs are also viewed as being the single most genetically diverse species on Earth - largely thanks to human-imposed selective breeding, the vast array of dog breeds surpasses any other creature on the planet. Due to selective breeding by man, however, many breeds of dog have significant [[gene]]tic disorders. These include hip dysplasia (particularly common in German Shepherds, although common in most big breeds), and respiratory problems caused by shortening of the face, as seen with Boxer dogs and the Bulldog's lip and Pugs smashed faces with wrinkles that collect dirt that must be washed out regularly or may become infected. To overcome the prevalence of genetic disorders rendered common by inbreeding, many breeders regularly practice outcrossing, or introducing new material into a breed line via mating with other kinds of dog. This restores vigor to a breed and can decrease the likelihood of genetic disorders manifesting.
Dogs are also viewed as being the single most genetically diverse species on Earth - largely thanks to human-imposed selective breeding, the vast array of dog breeds surpasses any other creature on the planet. Due to selective breeding by man, however, many breeds of dog have significant [[gene]]tic disorders. These include hip dysplasia (particularly common in German Shepherds, although common in most big breeds), and respiratory problems caused by shortening of the face, as seen with Boxer dogs and the Bulldog's lip and Pugs smashed faces with wrinkles that collect dirt that must be washed out regularly or may become infected. To overcome the prevalence of genetic disorders rendered common by inbreeding, many breeders regularly practice outcrossing, or introducing new material into a breed line via mating with other kinds of dog. This restores vigor to a breed and can decrease the likelihood of genetic disorders manifesting.