Ischial blaze diagnoses real ancestor of domestic dog
Canis familiaris, Smålandsstövare breed, photo © Linathrash
Canis familiaris,Bohemian shepherd breed, photo © Krosandra
The ischial blaze is unique to the domestic dog in the entire family Canidae and remains in many breeds regardless of human selection for other traits. The categorical absence of the ischial blaze in the wolf shows that the main ancestor of the domestic dog is an extinct species different from the wolf.
i.e. more intensely pigmented than the normal colour-m