Sable merle is a dog coat pattern combining the merle gene with a sable base coat. Sable means individual hairs are shaded from light to dark, often reddish-brown with black tips. The merle gene causes random dilution, creating irregular patches of lighter and darker fur. On a sable background, this merle pattern often appears subtle or 'cryptic' as sable shading...
A sable merle coat features a base color ranging from light gold to deep mahogany, characteristic of sable. Overlaid on this is the merle pattern, which creates lighter, patchy areas. This combination often results in a dog appearing largely sable, with the merle pattern subtly expressed, sometimes only visible as faded patches or ghost merle....
A sable merle differs from a standard merle because the sable gene modifies how the merle pattern expresses. In a standard merle, the dilute patches are very distinct against a solid base. With sable merle, the merle gene acts on an already lighter sable coat, making the patterned areas less defined and often harder to...
The merle gene (M) itself is dominant, meaning only one copy is needed for the pattern to be expressed. Sable (Ay) is also part of a dominant series on the A locus. When a dog is genetically both sable and merle, the dominant sable gene can mask or significantly reduce the visible expression of the...
Sable merle coloration is commonly seen in several shepherd and collie-type breeds. Breeds like Shetland Sheepdogs (Shelties), Collies (Rough and Smooth), and Australian Shepherds can exhibit this pattern. The subtle nature of the merle in these sables means it might be less obvious than in a blue merle, sometimes requiring keen observation or genetic testing...
Yes, a sable merle dog can absolutely have blue eyes, or one blue eye and one brown eye (heterochromia). The merle gene, regardless of how it expresses on the coat, is linked to eye color dilution. Even if the merle pattern is subtle on a sable dog, the gene can still cause blue eyes or...
Identifying a sable merle visually can be quite challenging, especially if the merle pattern is very subtle, often called "cryptic" or "ghost" merle. The sable color can mask the dilution effects, making the dog appear as a regular sable. Genetic testing is often the most reliable way to confirm the presence of the merle gene,...
Breeding a sable merle carries important genetic implications because the merle gene is present. If a sable merle is bred to another merle, regardless of visual appearance, there's a risk of producing "double merle" puppies. Double merles can have severe health issues, including blindness and deafness, making responsible genetic testing and breeding choices critically important...
A sable merle coat can indeed change color as the dog ages, much like regular sables. Puppy coats are often lighter and can darken with maturity. The subtle merle patches might become even less noticeable or, conversely, slightly more defined as the sable base color settles. Significant dramatic changes in the merle pattern itself are...
Sable merle dogs themselves typically do not have unique health concerns directly from their color, beyond what any merle dog might face. The primary concern arises when two merle dogs are bred together, regardless of their visual appearance. This double merle breeding can lead to severe auditory and ocular defects like deafness and blindness in...
Yes, a sable merle is always genetically merle, even if the visible pattern is extremely faint or appears entirely sable. The merle gene (M) is present in their DNA. The sable gene (Ay) simply modifies its expression, making it less obvious visually, but the dog still carries and can pass on the merle gene, which...