We have a 7 month old female yellow lab. She has a ridge of "wavy" hair that is about 3-4 inches wide and goes from the back of her neck all the way down to her tail. This hair is darker and coarser than the rest of her hair. We have not seen this on any other labs. She is a full blooded, registered yellow lab. Is this a common occurence?
Optional Information:
Age: 1; Female; Breed: Yellow Lab
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