Mixed-breed dog: Difference between revisions
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Revision as of 10:52, 24 July 2007
A mixedbreed dog is one of the world canine majority, a domestic dog that is not purebred. These dogs are called a great many other names, mongrel and mutt being among the more polite. Even so, the old adage that a mixbreed dog contains the best of all dogs has truth in it, and these dogs are among the most intelligent, healthy, and companionable dogs of all. In some cases, however, mixed breed or hybrid breed dogs are actually breed on purpose as a designer dog.
Genetics: From Mixed-Breed Dog to Purebred Dog
The difference between a Mixed-Breed dog and a Purebred dog is more than simply being recognized by the AKC. The difference is a genetic one. Purebred dogs tend to be homozygous at most loci, whereas mixed-breeds are heterozygous at many of the loci that determine appearance. This is why purebred dogs will look very similar to their parents but mixed breed dogs will often give puppies of very different appearance even within the same litter. (see dihybrid cross and Mendelian Genetics for more information.)
In creating a mixed-breed dog by mating two different purebreds, the puppies from the litter will look very similar to one another. In genetic terms, they are F1 hybrids; heterozygous at all loci that differed between the two parent breeds. If two F1 hybrids are then mated to one another each of the next generation (F2) of pups will be homozygous at some loci and heterozygous at others (which will be different for each pup). However, after apporximately 20 or more generations of crossing the offspring of each generation to one another, with occasional outcrosses to avoid the harmful effects of inbreeding, a new true-breeding line of dogs are produced. This is the basic method from which purebred dogs were created (i.e. they were derrived from mixed-breed dogs).
Hybrid breeds and nicknames
With the long-time popularity of the "breed" name cockapoo, used since at least 1970 and constructed by combining elements of its two contributing breeds (Cocker Spaniel/Poodle), it has become extremely common to find mixed-breed dogs named with breed names likewise invented by portmanteau. The tendency for using such names in a jocular way dates back at least to Queen Elizabeth's Dorgis (Dachshund/Corgi). However, extremely few of these become mainstream "breeds" over long periods with determined breeders, and, as of 2006, Cockapoo and Labradoodle are still the only such combined names to make it into the dictionary. Nonetheless, names such as these commonly appear in for-sale ads and often lack consistency; a cross between a Maltese Terrier and a Poodle, for example, may be advertized as either a "Maltipoo" or a "Moodle".
Among these:
- Afador (Afghan Hound/Labrador Retriever)
- Afghan Retriever (Afghan Hound/Golden Retriever)
- Akita Shepherd (Akita Inu/German Shepherd)
- American Bull Boxer (American Bulldog/Boxer)
- Basschshund (Dachshund/Basset Hound)
- Beaglier (Beagle/Cavalier King Charles Spaniel)
- Beagleman (Beagle/Doberman Pinscher)
- Beago (Beagle/Golden Retriever)
- Bea-tzu (Beagle/Shih-tzu)
- Bichon-Shih Tzu (Bichon/Shih Tzu)
- Boglen (Boston Terrier/Beagle)
- BoShih (Boston Terrier/Shih-Tzu)
- Bogle (Boxer/Beagle)
- Borador (Border Collie/Labrador Retriever)
- Borderjack (Border Collie/Jack Russell Terrier)
- Bordernese (Border Collie/Bernese Mountain Dog)
- Bospin (Boston Terrier/Miniature Pinscher)
- Boxador (Boxer/Labrador Retriever)
- Boxweiler (Boxer/Rottweiler)
- Bull-Shih (Bulldog/Shih-Tzu)
- Cavachon (Cavalier King Charles Spaniel/Bichon)
- Cavapoo (Cavalier King Charles Spaniel/Poodle)
- Cheeks (Chihuahua/Pekingese)
- Chi-Chon (Chihuahua/Bichon Frise)
- ChiPin (Chihuahua/Miniature Pinscher).
- Chiweiner (Chihuahua/Dachshund).
- Chug (Chihuahua/Pug)
- Cockachon (Cocker Spaniel/Bichon Frise)
- Cockapoo/Cockerpoo (Cocker Spaniel/Poodle)
- Corgidor (Cardigan Welsh Corgi/Labrador Retriever)
- Dameranian (Dachshund/Pomeranian)
- Daug (Dachshund/Pug)
- Dorgi (Dachshund/Welsh Corgi)
- Dorkie (Dachshund/Yorkshire Terrier)
- Doxie-chon (Dachshund/Bichon Frise)
- Doxle (Beagle/Dachshund)
- EngAm Bulldog (American Bulldog/English Bulldog)
- Faux Frenchbo Bulldog (Boston Terrier/French Bulldog)
- Frenchie Pug (French Bulldog/Pug)
- Frengle (Beagle/French Bulldog)
- Goldendoodle (Golden Retriever/Poodle)
- Golden Boxer (Golden Retriever/Boxer)
- Golden Mountain Dog (Golden Retriever/Bernese Mountain Dog)
- Gollie (Collie/Golden Retriever)
- Goldmation (Golden Retriever/Dalmatian)
- Hug (Husky/Pug)
- Jackabee (Jack Russell Terrier/Beagle)
- Jackrat Terrier (Jack Russell Terrier/Rat Terrier)
- Labernese (Labrador Retriever/Bernese Mountain Dog)
- Labradane (Labrador Retriever/Great Dane)
- Labradoodle (Labrador Retriever/Standard Poodle)
- Mini Jack (Miniature Pinscher/Jack Russell Terrier)
- Morkie (Maltese/Yorkshire Terrier)
- Pointing Lab (Labrador Retriever/English Pointer)
- Poodle hybrids of all kinds (such as Cockapoo and Schnoodle)
- Pom-chi (Chihuahua/Pomeranian)
- Pominese (Pekingese/Pomeranian)
- Pugalier (Pug/Cavalier King Charles Spaniel)
- Puggle (Pug/Beagle)
- Rat-Cha (Rat Terrier/Chihuahua)
- Reagle (Rottweiler/Beagle)
- Shih Pom (Shih Tzu/Pomeranian)
- Shih-poo (Shih Tzu/Poodle)
- Shollie (German Shepherd Dog/Rough Collie)
- Silky-poo (Silky Terrier/Poodle)
- Spalmation (English Springer Spaniel/Dalmation)
- Sprocker (English Springer Spaniel/Cocker Spaniel)
- Yo-Chon (Yorkshire Terrier/Bichon Frise)
- Yoranian (Pomeranian/Yorkshire Terrier)
Inter-Species Hybrids
See canid hybrid for details of dog hybrids between domestic dogs and wild species.