Dog

2008-12-15T00:43:14Z

SamM444:

{{Taxonomy|image = akitadog.jpg|kingdom = Animalia|phylum = Chordata|subphylum = Vertebrata|class = Mammalia|order = Carnivora|suborder = Caniformia |family = Canidae|genus = Canis|species = lupus|sub = C. l. familiaris (Domesticated dog)}}

'''Dogs''' are one of the most well-known domesticated species, with archaeological and historical records showing that they have lived in a mutually beneficial relationship with humans for thousands of years.

Male dogs are referred to as a ''dog'', while a female is called a ''bitch''. Offspring are called ''pups'' (or ''puppies'') until around a year old. The collective noun for a group of offspring is ''litter''.

Research has shown that it is probable that the first settlers respectively of the [[America]]s and [[Australia]] brought dogs of some sort with them.

== Scientific details ==
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).

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>
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>

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|genetic]] disorders. These include hip dysplasia (common with German Shepherds), and respiratory problems caused by shortening of the face, as seen with Boxer dogs and the Bulldog's lip.

== Bites ==
[[Image:Dog - Jay Paul - The New York Times.jpg|thumb|250px|right|Dog in a kennel with the animal said to be on hold due to court case]]
Despite being colloquially known as "man's best friend", every 40 seconds, someone in the [[United States of America|United States]] seeks medical help for a dog bite, with approximately 800,000 such bites per year requiring medical attention.<ref>http://www.dogbitelaw.com/PAGES/statistics.html</ref>
Due to the high cost of dog bite liability claims, some [[insurance]] companies have blacklisted certain breeds and refuse to provide homeowners insurance to those who own these dog breeds. <ref>http://www.dogbitelegalcenter.com/resources/common-dogs.html</ref>

== Uses ==

Dogs are used for many purposes:

*Guarding property and livestock.
*Herding [[sheep]] and [[cow|cattle]].
*Tracking by scent, carrying messages, and mountain rescue.
*Pursuing, flushing and retrieving game, and killing [[vermin]].
*Providing assistance to blind and deaf people.
*Military and police duties including guarding, tracking and attacking. In [[World War II]], the [[Soviet Union]] attempted to train dogs to place explosive charges under German [[tank]]s.
*To detect illegal drugs (German Shepherds are commonly trained to do so by police)
*As a beast of burden, or for drawing sledges and dogcarts.
* As a performing animal. [[Circus]] dogs have been trained to dance, ride bicycles and walk the tightrope.
* For fighting, now illegal in most places, e.g. everywhere in USA.
*As food. Dog is still considered a delicacy in [[China]], [[Korea]] and parts of [[Africa]] today.

Today most dogs in western countries are kept for [[pet|companionship]] only. Stray and feral dogs cause many problems, spreading diseases such as [[rabies]], and attacking people and [[livestock]].

==Further reading==
* [http://www.mastiffexperts.com Mastiff Experts]

==References==
{{reflist|2}}

[[Category:Canines]]
[[Category:Biblical Animals]]
[[Category:Domestic Animals]]

Conservapedia - User contributions [en]

Dog