Bay (horse)

Bay is a horse hair coat color with a reddish-brown or brown body and black coloration on the mane, tail, ear edges, and lower legs. These dark areas are called black points, and their presence is required for a horse to be classified as bay. Bay is common in many horse breeds. It occurs genetically when the Agouti gene modifies the extension gene that creates a black base coat.

Body color

Reddish-brown or brown

Defining feature

Black points on the mane, tail, ear edges, and lower legs

Genetics

Agouti modifies the extension gene creating a black base coat