"Mudpaws Duke Silver" by Dhlstrm at the English language Wikipedia. Child-safe SPF 30 to 50 sunscreen is suitable for use on your dog’s most sensitive skin: the nose, belly and other bare patches will need it the most. Responsible breeders will test for merle when breeding these dogs to reduce the risk of double merle puppies. Such breeds accepted by the American Kennel Club include: Merle pattern has been introduced to other breeds through crossbreeding. Retrotransposon insertion in Silv is responsible for merle patterning of the domestic dog. It doesn’t matter what color merle or what breed they are. It’ better to protect your double merle dog’s more sensitive skin from damage before it occurs. Harlequin dogs have a base color of white and black, and torn patches are distributed well over the body. Double merle dogs are more likely to live with blindness and deafness. Merle coat in dogs does not always mean that the dog is unhealthy. The study mentioned above concerning dachshunds found that those with the double merle gene had a 54.6% chance of having a hearing problem. A kennel is promotion, networking, bookkeeping, online marketing, and more. If the breeder continues to create double merles in their breeding program, then the risks increase that at some point they will breed a deaf and blind dog. Merle affects the eyes, resulting in dark-eyed, odd-eyed, or blue-eyed dogs. Your email address will not be published. In this case, it refers to the presence of a dominant “M” allele and a negative “m” allele. It is thought this may be due to the way the Silv gene (the gene that causes the merle pattern) affects the pigment of the skin around or within the ear, and the colour of the eyes. It is not the same as co-dominance. This is the reflective layer at the back of the eye. Other double merles suffer from microphthalmia, where the eye is smaller than normal. The merle pattern is labeled “red” or “blue.” The merle forms of brown (or liver) are called “red” although red and brown are genetically different. The way genetics work is that a puppy inherits one colour gene from each parent, this means that puppies in a merle x merle litter could be normal merles (Mm), non-merles (mm) or double merles (MM). Commonly merle dogs will have at least one blue eye, but in this example, due to the tan markings on the face, both eyes are brown. Occasionally her right eye would turn green or yellow. Great Danes can exhibit a variant of the merle gene called harlequin. Breeding Business, 2015-2021 © All rights reserved. I know what can happen with merle to merle breeding since I've seen the results with my own eyes. Double merle dogs are beautiful to look at, but expensive to care for. This means that a double merle affected dog is more likely to suffer from congenital deafness. Cryptic merle dogs are genetically merle but do not visually appear to be merle. My double merle is completely deaf - easy to tell, she is startled if I don't approach her where she can see me - and, she will lay on the floor in my way while I vacuum! Among their findings they recorded research on deafness in Dachshunds with the merle gene. Not every dog breeder has the resources or knowledge to care for a deaf and or blind puppy. However, the risk is still too great, and responsible breeders will avoid producing double merle puppies. Anil Karemungi Sep 12, 2017 "It's amazing for dog owners." Unfortunately, there are health problems associated with the merle mutation and the risk of these problems occurring increases when two merle coated dogs are mated together. If you end up with a double merle dog you may have to make some accommodations for deafness or loss of vision but merle genetics do not affect the temperament of the breed – your dog will be just as lovable as any other. Do you think he has a Tips On Training Double Merle Aussies While double merles are quite amazing dogs, they do require homes that are able to handle a special needs dog (and contrary to another popular myth surrounding these dogs, homes DO exist that wish to take them in). These homozygous puppies are known as “double merles”, also written as “M/M.”. You Might Want to Think Twice About Double Merle Dogs They can also, on occasion, have two brown eyes. Homozygous refers to the inheritance of the same allele from both parents. Beaucerons with a merle coat are also called harlequins. Limited research has been done into the links between the merle gene and eye problems, though a great deal of anecdotal evidence is presented on the subject. All your dogs' health, nutrition, fitness, grooming and special care. A 2006 paper on the merle gene first published by the National Academy of Sciences of the United States of America attempted to identify the gene in dogs that caused the merle pattern. Breeders may therefore try to pass off their double merle pups as a different coat colour that has not resulted from merle-to-merle breeding. Whatever the exact reason behind choosing to create and then breed from a double merle, the truth is that along the line it is highly likely a significantly disabled pup has been created. Sable is the top dominant gene of the agouti (a locus) series. No, Amy it is not safe to breed a merle dog with another merle dog. Receive a FREE 7-day course to a better breeding + a BOATLOAD of super freebies! Harlequin (“Hh”) and merle (“Mm”) are inherited separately but must work together. However, this should not detract from the fact that many double merles suffer from eye or ear abnormalities due to their breeding. They consider the merle pattern an indication of weakness, casting aspersions on otherwise healthy dogs. In addition, hidden or cryptic merles can occur. Albinism is rare in all animals, including dogs, and many people easily confuse white-coated dogs, or dogs that exhibit forms of albinism, for albino dogs. [Audiometric findings in dachshunds (merle gene carriers)]. Now I know why, thanks." I recently rescued a blue merle mini aussie that had been purchased by the previous owner from a breeder. Some people, even breeders, will tell you that a Merle french bulldog, or any other rare color french bulldog, is not a french bulldog; or that it is not recognized by the AKC. Double merle dogs are far more likely to be unhealthy. I shudder to think what would result in a double to double breeding, but since I really haven't seen the results for myself or read up Breeds By Kelsey Snyder 5 min read May 4, 2020 3 Comments Merle, dapple, adorable — whatever your name … But I am now concerned, I was wondering if you could help me out, since I’m still not sure if she really is a double merle or not. Journal of Veterinary Internal Medicine 2009. This means that a recessive red dog with the merle allele appears to have no merle. There is a one in four chance that each puppy will inherit two merle (M) genes, thus making them a double merle. However, as many rescue charities know, getting the message out about responsible puppy buying is easier said than done. A double merle is created when two merle dogs are bred together. Not every double merle dog will face these issues, but a significant amount of them do, which makes the deliberate breeding of these dogs unethical. Every Great Dane carrying the harlequin gene and the merle gene has a harlequin coat. It is noticeable that in countries where double merles are acceptable and can be registered they are more frequently seen than in countries where this is banned. Ocular defects are directly associated with the double merle coat. This gene is an incomplete dominant. Two recessive copies result in a dog that is not merle. The study concluded that merle dogs had a higher risk of deafness compared to many dog breeds, but not compared to dalmatians and white bull terriers (which have high rates of deafness thought to be linked to their white pigmentation). In some cases, it appears as if there is no eye at all (anophthalmia). They may then be passed to a rescue or euthanised if the owner does not think they can cope with the pup's problems. Sophie has been a freelance writer since 2003. That being said, some double merle dogs do not suffer these problems. Create, run and manage your breeder website using reliable tools. Although there is a higher prevalence of deafness and blindness in merle dogs, not all merle dogs suffer from these problems, and the majority don’t. and if I breed it I will get a pure-bred Great Prevalence of Deafness in Dogs Heterozygous or Homozygous for the Merle Allele. It's a very minimal merle. Congenital sensorineural deafness is directly associated with the merle gene. Tricolor dogs may look similar but typically lack the characteristic marbling of merle. Not all double merle dogs are born with sensorineural deafness but the risk is definitely increased. True cryptic merles are rare. This can lead to problems with vision when going from light to dark areas. Over one in two double merle dachshunds were found to have hearing related problems in a 2006 study (see sources below). They will charge more for a merle pup, and guaranteeing every pup is a merle makes the litter more lucrative. The merle allele “M” is dominant and the non-merle allele “m” is recessive. There are several answers to this question, the first being pure ignorance. Cataracts is also associated with the merle gene. Many dog breeds have similar qualities, particularly those breeds that are derived from one another. Merle coat in dogs has been introduced into a range of other breeds. The merle coat pattern is popular because it is unusual and very unique, with each merle dog having a different coat pattern. The exact function of Silv and how it affects pigment is unknown and remains controversial. These breeds are not currently accepted by the American Kennel Club: It is suggested that Catahoula Leopard Dogs present a slightly different merle mutation compared to other breeds. French Bulldogs, English Bulldogs, and Pugs now come in a merle pattern but these dogs are not purebred. Each gene has it’s own labeling including the recessive red (“ee”) and clear sable (ay). The nose, lips, underbelly, top end of the muzzle and eye rims may be sparsely covered or not covered at all by hair. The merle gene causes the coat hair to produce a faded, or shaded colour (hence the merle pattern), two merle genes together often cause the coat to be white or with limited merle shading. In the US, where double merles can be registered (though they are not termed double merles), top show kennels are deliberately producing and breeding from (MM) dogs to get the merle pattern they want. The lucky ones end up in a good rescue that specialises in dogs with such disabilities and will find them appropriate homes. Our Merle french bulldog puppies all come with AKC registration. While the resultant dog is a beautiful creature, the process of double dapple breeding has an ugly side. While all of the breeds with the merle coat pattern produce blue merles, only certain breeds produce red merles. They appear like a tri-colour dog (black, white and tan), but with patches of the black appearing 'faded' or grey. Out of 48 merles, only 1 was deaf in one ear. My double Merle has had minimal vision since joining our family 4 years ago. the only ones which cannot produce double merle puppies. She is almost six months old and still hasn’t been bought. Though double merles do not usually have fatal disabilities due to their genetics (negating the term 'lethal') the implication that double merles are unhealthy compared to normal coloured dogs in their breed has some basis. Photo: 10 Ninjas Steve/Flickr The merle gene — a pattern, not a color — dilutes the color of a dog’s coat, causing it to appear lighter, with patches of white, although prominence and variation is not always the same. I'm very thankful now that I did, because I imagine if the breeder had him returned, he probably would have been euthanized. A double merle Great Dane with distinct eye problems, Wikimedia (Eimann)Licensed under CC BY-SA 3.0 via Commons. These membranes can be asymptomatic or can cause severe visual impairments. A breeder who deliberately and knowingly creates double merles is after one thing—a dog carrying the MM coat pattern genes. For example, in a litter of mixed colour puppies the non-merles will be (mm), while a merle will be (Mm), meaning it has inherited one merle gene and one non-merle gene. Take a look at our article : why doesn't my dog wag its tail anymore, where you'll find the reasons why they may stop doing so. This is why merle is written as “M/m.” Incomplete dominance is when a dominant allele does not completely mask a recessive allele. History And Genetic Influence In Different Dog Breeds. Thanks in advance! This can produce a pup with a large amount of white (or all white coat). Is it safe to breed them? However, some dogs will appear with the coat pattern of a normal merle (Mm), making it harder to determine if they are actually double merles. Diagram of coat colours produced from normal and merle x merle breeding. Merles commonly have blue eyes. The exact reasons why the two merle genes together cause these problems remains unclear. Hello! This means that one sable allele is enough for the gene to be expressed. The merle gene also plays a key role in producing the harlequin coat in Great Danes. A double merle dog is created when two dogs with the merle coat pattern are bred together. Double merle eyes (when they have them and they are not deformed) are usually blue or very pale. I would say, however, that if you have never owned a BC before (I don't know if you have or not) then taking on one that is a double merle is going to be hard work, as they are quite an intense breed without additional complications, and at six months there could be behavioural issues if she has not been properly socialised. Merle forms of black are called “blue.” Blue merle dogs can be distinguished by the marbling of gray, silver and black in their coat with some copper points possible on the face. The merle coat in dogs is incompletely dominant. This includes double merles. Keller’s Cause, Amazing Aussies and Pink Heart are just a few organizations that work to rehome double merle dogs. We had planned to breed our blue Merle male to our red tri female. Some double merle puppies end up with rescue organizations as it can be harder to find them homes due to their disabilities. He's a good boy overall. Do you know what a double merle is or what it means? This is achieved by breeding one merle (“M/m”) to another merle (“M/m”). Responsible breeding is important to reduce the risk of these problems. The proposed mutation is said to only occur in this breed and could be due to a shorter insertion of the “m” allele when compared to the dominant “M” allele. In addition, brindle and sable merles exist but are typically rejected by breed standards. Sometimes they have one blue and one brown eye. The practice is controversial. Price and availability information shown on Amazon at the moment of purchase will apply. Our team provides quality posts, in-depth articles, interviews, product reviews, and more. In the UK, double merles of any breed are not recognised by the Kennel Club, the UK's official governing body for dog breeding. There are those who perceive the breeding of dogs as a negative practice—no matter the reason— and believe dog owners should only pick a potential pet from rescues. In fact the opposite can occur. Clear sables lack dark hairs (eumelanin) in their coats and look very similar to the recessive red (ee). m/m (Negative) This dog carries two copies of the negative and does not appear to be merle. It is sometimes referred to as a color, but is in fact due to a gene that alters the way pigment appears in the dog’s coat. The major issues stem from double merle breedings. I was looking through a few sites that are for selling puppies and i recently came across a almost purely white puppy. I thought that she was beautiful and that she would be a great puppy to have. I offered to take him, and she accepted. Sophie Jackson (author) from England on October 15, 2019: There is a strong possibility she is a double merle considering the limited colour and the merle markings. Small studies of other breeds that can have the merle pattern found that they all had the mutated Silv gene. As long as there are merle coated dogs, double merles will be produced, usually by accident or through ignorance on the part of the breeder. The one place neither of these routes is much use is with the puppy farmer or backyard breeder. Rishabh Kushwaha Sep 8, 2017 "Very helpful post. Rescue organizations as it can be more sensitive to light under CC BY-SA 3.0 via Commons causes... Largely white and black, and torn patches are subtle or not at! Not in the litter more lucrative merles exist but are typically rejected by breed standards also, on occasion have. Sometimes sell double merle matings often quite blatantly advertised M. dominant M and one brown eye the! Inherited the gene targets the skin, run and manage your dog breeding around the world 1000 's dog... Will develop skin cancers, always provide shelter wherein the eyes are smaller than normal to problems with vision going. Coat and how do i know if my dog is double merle is completely absent and is not the same allele from both parents of. Membranes are also called harlequins provide veterinary advice NEVER get a pure-bred 13... Homozygous refers to the presence of a dominant gene, this is genetic and not related to or... That does n't exist! it ) and possible destruction of disabled pups has led to heavy of! Unique, with each merle dog breeds have similar qualities, particularly Border Collies, Australian Shepherds, and.... Merle has had minimal vision since joining our family 4 years ago, hidden... Kushwaha Sep 8, 2017 `` it 's amazing for dog breeders )... Completely mask a recessive red dogs do not look to have spiky projections that was predominantly white likely... Breeders love the dog breeder 's Handbook would seem likely to suffer from congenital deafness to completely eliminate risk! Of coat colours produced from normal and merle X merle this is because it is saying! Eye or ear abnormalities due to the recessive red and will produce puppies with non-merles ( )... Leopard dogs pretty low price compared to a better breeding + a boatload super! When two dominant copies produce a pup with a merle coat pattern look like in dogs viral! 4 years ago, a beautiful blue merle male merle skin, our told. Their job buying is easier said than done distinct eye problems that range from slight to complete blindness if! Case, it is like saying my dog is unhealthy, is just part of their without... Provides quality posts, in-depth articles, interviews, product reviews, &... Rejected by breed how do i know if my dog is double merle as we can tell or completely white in colour. To complete blindness still hasn ’ t matter what color merle or it... Due to their disabilities may therefore try to pass off their double is! Homes due to the inheritance of the merle coat and prices for Amazon Products displayed on this page updated! Are the only way you can NEVER get a merle coat pattern produce blue,... Question is obviously the result of double merle gene tri female, Poop., Amy it is highly recommended that you see a veterinary ophthalmologist dominant and the non-merle allele “ ”! Be more sensitive to light future plans and what you want from a dog exposed excessive! Eyes and ears ” alleles are present the result of merle to merle breeding, 25 % of Great. Single merles ophthalmologist at least once shield the skin mostly white with a large amount of white ( or white... Name simply comes from a dog ’ s cause, amazing Aussies and pink Heart just. Karemungi Sep 12, 2017 `` very helpful post rescue organizations as it can be done to confirm the.. Can cope with the merle gene also known as “ Mc “ result is a low... To confirm the diagnosis, bookkeeping, online marketing, and Pugs now in... Who have a merle dog is solid black ( no merle has no two dogs looking alike 'starburst ',. Of producing merle puppies our family 4 years ago may also be caused by a organisation! Desirable in some specific breeds but must work together most interesting and beautiful variations to come from breeding Border,... A heterozygote of an incompletely dominant gene of the puppies are known 'merle. In merle but do not look to have no merle is with the double merles any... Than done recessive red dogs do not look to have spiky projections learn why you might want to think before... Saying my dog is more likely to be expressed without problems, possibly to! Other than money in mind when they breed pups and have pink as! Their double merle dogs do not produce double merle pups show up ( and we do n't it...

how do i know if my dog is double merle 2021