Editing Crossbreed (section)

== Crossbreeds in specific animals ==

'''Cats:''' The many newly developed and recognized [[List of cat breeds|breeds of domestic cat]] are crossbreeds between existing, well-established breeds (sometimes with limited [[Hybrid (biology)|hybridization]] with some wild species), to either combine selected traits from the [[foundation stock]], or propagate a rare [[mutation]] without excessive [[inbreeding]].  However, some nascent breeds such as the [[Aegean cat]] are developed entirely from a local [[landrace]] population.  Most [[List of experimental cat breeds|experimental cat breeds]] are crossbreeds.

'''Cattle:''' In cattle, there are systems of crossbreeding. In many crossbreeds, one animal is larger than the other. One is used when the purebred females are particularly adapted to a specific environment, and are crossed with purebred bulls from another environment to produce a generation having traits of both parents.<ref>[http://www2.dpi.qld.gov.au/beef/2243.html Cross breeding systems for beef cattle larger] {{webarchive|url=https://web.archive.org/web/20080608174409/http://www2.dpi.qld.gov.au/beef/2243.html |date=2008-06-08 }} Department of Primary Industries and Fisheries, Queensland</ref>

'''Sheep:''' The large number of breeds of sheep, which vary greatly, creates an opportunity for crossbreeding to be used to tailor production of lambs to the goal of the individual stockman.<ref>[http://ag.ansc.purdue.edu/sheep/ansc442/Semprojs/2003/crossbrd/ansc442.htm Crossbreeding In Sheep, by Angie Bailey, Jason Canup and Jorge Lucena] {{webarchive|url=http://archive.wikiwix.com/cache/20080524060408/http://ag.ansc.purdue.edu/sheep/ansc442/Semprojs/2003/crossbrd/ansc442.htm |date=2008-05-24 }} Purdue University, US</ref>

'''Llamas:''' Results of crossbreeding classic and woolly breeds of llama are unpredictable. The resulting offspring displays physical characteristics of either parent, or a mix of characteristics from both, periodically producing a fleeced llama. 
The results are increasingly unpredictable when both parents are crossbreeds, with possibility of the offspring displaying characteristics of a grandparent, not obvious in either parent.<ref>{{cite web|url=http://lostcreekllamas.com/classic.htm|title=classic llamas|website=lostcreekllamas.com|access-date=1 May 2018|url-status=live|archive-url=https://web.archive.org/web/20170824171648/http://lostcreekllamas.com/classic.htm|archive-date=24 August 2017}}</ref>

'''Dogs:'''
{{Main|Dog crossbreed}}
A ''crossbred'' dog is a cross between two (sometimes more) known breeds, and is usually distinguished from a ''[[mixed-breed dog]]'', which has ancestry from many sources, some of which may not be known.  Crossbreeds are popular, due to the belief that they have [[Hybrid vigor|increased vigor]] without loss of attractiveness of the dog. Certain planned crossbreeding between purebred dogs of different breeds are now widely known as "designer dogs" and can produce puppies worth more than their purebred parents, due to a high demand.

[[File:National Show Horse.jpg|thumb|The [[National Show Horse]] was developed from crossbreeding programs in the 1970s and 1980s that blended [[Arabian horse]] and [[American Saddlebred]] bloodlines]]
'''Horses:'''
Crossbreeding horses is often done with the intent of ultimately creating a new breed of horse. One type of modern crossbreeding in horses created many of the [[warmblood]] breeds used in the [[sport horse]] disciplines, usually registered in an [[open stud book]] by a [[studbook selection]] procedure that evaluates conformation, pedigree and, in some animals, a training or performance standard.  Most warmblood breeds began as a cross of [[draft horse]] breeds on [[Thoroughbred]]s, but have, in some cases, developed over the past century to the point where they are considered to be a true-breeding population and have a [[closed stud book]].  Other types of recognized crossbreeding include that within the [[American Quarter Horse]], which will register horses with one Thoroughbred parent and one registered Quarter Horse parent in the "Appendix" registry, and allow such animals full breed registration status as Quarter Horses if they meet a certain performance standard.   Another well-known crossbred horse is the [[Anglo-Arabian]], which may be produced by a purebred [[Arabian horse]] crossed on a Thoroughbred, or by various crosses of Anglo-Arabians with other Anglo-Arabians, as long as the ensuing animal never has more than 75% or less than 25% of each breed represented in its pedigree.