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Merle (dog coat) Merle is a genetic pattern in a dog 's coat and alleles of the PMEL gene. It results in different colors and patterns and can affect any coats. The allele creates mottled patches of color in a solid or piebald coat, blue or odd-colored eyes, and can affect skin pigment as well. Two types of colored patches generally appear in a ...
The second way blue eyes can appear is when a dog has a lot of white fur on the face. Since the white areas cannot produce any pigment, pigment from the eyes and nose may be lost as well. [68] The third way is when dogs are affected by albinism. [68] A different gene, unaffected by coat color, can make the eyes blue. However, this gene is rare.
The merle gene does not normally affect the entire coat of the dog, but dilutes the color only in areas that randomly present the characteristic of the gene. Deeper colors are preferred; predominantly white coats are discouraged. Since Catahoula is a working dog, coat color is not a primary consideration. [1] [6]
Lemon, blue, brindle, or tricolor spots do appear on occasion but they are rare. Plain whites are also possible but quite rare as well. The Dalmatian is a breed of dog with a white coat marked with dark-coloured spots. Originally bred as a hunting dog, [2] it was also used as a carriage dog in its early days.
A Bankhar dog showing the favored "Four Eye Dog" markings. While undoubtedly an ancient breed, genetic analysis indicates that the Bankhar dog is a basal breed and may be the progenitor of all livestock guardian dogs. [6] [7] [5] Buryat legend states that the breed appeared as a huge ferocious dog that accompanied a giant descending from the ...
Maltese dog. Maltese dog refers both to an ancient variety of dwarf, white-coated dog breed from Italy [1] and generally associated also with the island of Malta, and to a modern breed of similar dogs in the toy group, genetically related to the Bichon, Bolognese, and Havanese breeds. [2] The precise link, if any, between the modern and ancient ...
Labrador Retrievers are a popular dog breed in many countries. There are three recognised colours, black, chocolate, and yellow, [1] that result from the interplay among genes that direct production and expression of two pigments, eumelanin (brown or black pigment) and pheomelanin (yellow to red pigment), in the fur and skin of the dog.
A piebald or pied animal is one that has a pattern of unpigmented spots (white) on a pigmented background of hair, feathers or scales. Thus a piebald black and white dog is a black dog with white spots. The animal's skin under the white background is not pigmented. Location of the unpigmented spots is dependent on the migration of melanoblasts ...