What is the term for a dark stripe that runs along the spine of a horse?

The term for a dark stripe that runs along the spine of a horse is known as a dorsal stripe. This distinctive marking is often seen in certain breeds and can vary in coloration, appearing as a darker line down the middle of the horse’s back. The dorsal stripe is not only a visual characteristic but can also provide insights into the horse's genetics and ancestry, often indicating wild or primitive traits. In contrast, a blaze refers to a broad white marking on the horse's face, a star is a white mark on the forehead, and a snip is a small white mark on the nose. These other markings pertain to different parts of the horse's anatomy and do not describe the specific stripe along the spine that the dorsal stripe identifies.