https://pubmed.ncbi.nlm.nih.gov/12692165/
MC1R studies in dogs with melanistic mask or brindle patterns
Black mask is a characteristic pattern in which red, yellow, tan, fawn, or brindle dogs exhibit a melanistic muzzle which may extend up onto the ears....
studiesdogsmaskbrindlepatterns
https://pmc.ncbi.nlm.nih.gov/articles/PMC6455901/
Natural Selection and Origin of a Melanistic Allele in North American Gray Wolves - PMC
Pigmentation is often used to understand how natural selection affects genetic variation in wild populations since it can have a simple genetic basis, and can...