The only way these people can be stopped is by bringing in legislation to stop puppy farming, but that is another issue entirely. Like people, a dog exposed to excessive sunlight will develop skin cancers, always use sunscreen to aid dogs with sensitive merle skin. This is often used as a reason why the merle coat pattern should not be recognised in a breed, even when it occasionally crops up naturally. Double merles are highly likely to suffer from eye or ear deformities (in some cases both), which at the most extreme can result in complete blindness and deafness. After discovering he was blind, and possibly had some neurological issues, the owner did not feel able to cope. Operated by Lazhar Limited, a company registered in England & Wales (Company No. 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. Smaller gray patches consistent with a merle marking are also present. Two dominant copies produce a double merle which will most likely have serious eye defects and may be deaf. Merle — that kaleidoscope of swirly patterns that has no two dogs looking alike. In this case, it refers to the presence of a dominant “M” allele and a negative “m” allele. This cuts out one reason for producing double merles—perfect merle patterning in second generation litters—as these puppies cannot be recognised and thus not shown. My double Merle has had minimal vision since joining our family 4 years ago. Unfortunately, the intriguing dog merle coat is associated with several health problems. While ignorance is no real excuse, what's far worse is those who know the risks and still choose to breed merle to merle. Red merle dogs are marbled, light cinnamon to dark liver color with copper points on the face and legs. This article will delve into possible health concerns Sometimes dogs may appear to have normal coat colouring but are in fact merles and will produce puppies with the merle colouration. How to Identify a Miniature Schnauzer. Every Great Dane carrying the harlequin gene and the merle gene has a harlequin coat. 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). Cryptic merle dogs are genetically merle but do not visually appear to be merle. Double merle dogs can be more sensitive to light. 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. Other breeders believe a mating involving a double merle will produce the best merle pattern on all the puppies, so they choose to produce or use a double merle in the hopes of getting the best 'show quality' dog. As far as I know, a Blue is an automatic Dilute. These are known as 'cryptic merles', but the exact reason why such dogs do not display the merle pattern remains unknown. It is not the same as co-dominance. They have no reason other than money in mind when they breed pups and have no concern for the health of their dogs. In hotter weather, you should apply sunscreen too. A double merle is created when two merle dogs are bred together. Great article! She is a pretty low price compared to a lot of other puppies, only $350. It absolutely depends on your future plans and what you want from a dog. There may be a link between pale coloured eyes and eye problems, but so far the scientific research to back this claim has not emerged in the public domain. Reputable breeders who wish to produce merle puppies mate a merle (“M/m”) with a non-merle dog (“m/m”). This article explores the world of double merle genetics, the breeds affected, the health issues and the wide range of ongoing debates concerning the breeding of double merles. I know people who didn't understand and tried. These homozygous puppies are known as “double merles”, also written as “M/M.”. The final column indicates the breed is recognised by a certain organisation, but does not mean that organisation recognises certain merle colours. content, products, and resources as well as animal education; the information and content on is intended While we provide informational Our Merle french bulldog puppies all come with AKC registration. There is scientific evidence to suggest that the merle gene may be linked to a higher rate of ocular (eye) or auditory (ear) problems. There is a perception that show dog breeders are the worst offenders for producing double merles because they are striving for the perfect merle coat pattern. Is the light sensitivity a genetic trait that may be passed on the to the pups? Double merle dogs are beautiful to look at, but expensive to care for. Price and availability information shown on Amazon at the moment of purchase will apply. I recently rescued a blue merle mini aussie that had been purchased by the previous owner from a breeder. Brindle is broken up and patchy due to the effects of the merle gene. While a slightly smaller eye may not impede vision, many double merles have significantly smaller eyes which leads to varying degrees of sight loss. The study examined 153 merle dogs, and found that over 8% of the study group had some form of deafness. A blue merle is a black dog with the merle pattern; a red merle is a liver dog with the merle pattern. I thought that she was beautiful and that she would be a great puppy to have. Some double merles have a 'starburst' pupil, where the pupil appears to have spiky projections. 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). 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. Poor baby! I offered to take him, and she accepted. The same study found that in Shetland Sheepdogs a mutation of the pigmentation gene known as Silver (or Silv) is probably responsible for the merle pattern. Double Merle Dog Health One study found that deafness affected 9.2 percent of dogs with the merle allele, with 3.5 percent in single merles and 25 percent in the double merle dog. As with hearing, double merles can have eye problems that range from slight vision loss or unusual eyes, to complete blindness. In certain breeds of dog, there is a coat pattern known as 'merle'. 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. There are problems with this form of mating too and there can be risks of deafness due to the heavy amount of white (like with dalmatians, the white coat gene carries problems). My exposé of Wyndlair Avalanche has gone viral and now the breeders who support this practice are closing ranks and covering their tracks. One-off litter or professional dog breeder? Harlequin (“Hh”) and merle (“Mm”) are inherited separately but must work together. The merle gene is usually dominant, so a merle dog will have inherited the gene from one of its parents. It is crystal clear that we love our dogs dearly, that we love spending time with our dog and we know that, whenever we need them, we can count on their company. Blue merles with no tan markings at all are known as bi-blues, but a red merle does not necessarily have to have tan markings. In a wider context, such breeding brings the ethics of all dog breeders into question and casts a pall over the show dog world. Phantom, cryptic or hidden merles may also be caused by a different mutation labeled as “Mc“. The quality of life of many double dapple bred dogs Sable is the top dominant gene of the agouti (a locus) series. Small studies of other breeds that can have the merle pattern found that they all had the mutated Silv gene. A dog that has very reduced merling that is nevertheless visible, such as a blue ear, isn't a cryptic merle. 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. Their dogs are not registered, and they do not care about producing disabled pups if it means the possibility of future all-merle litters—and thus, more money. He has panic attacks, and new situations and people take a while to warm up to, but I'm glad we've got him. This breed has a lower incidence of ocular abnormalities and deafness associated with the merle gene. Yay. In the UK, double merles of any breed are not recognised by the Kennel Club, the UK's official governing body for dog breeding. The question many ask is, if breeding merle to merle has such a high chance of producing a disabled puppy, why would anyone do it? This is why merle is written as “M/m.” Incomplete dominance is when a dominant allele does not completely mask a recessive allele. The only way you can produce a “double-merle” is by breeding together two merles. This is because it requires crossbreeding and potentially brings health issues to the target breed. This can produce a pup with a large amount of white (or all white coat). The recessive red allele (“ee”) hides some merling. This dog, when mated to a non-merle, will produce an entire litter of normal merles, because it carries two versions of the merle (M) gene and all the puppies will inherit one copy from it, thus making them all (Mm). 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. Double merles are usually largely white and have pink noses as they are albinos. Double Merle Collie breeders have no problem with their dogs being blind, and they have no problem pulling the wool over your eyes either. 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