Seal brown is a hair coat color of horses characterized by a near-black body color; with black points, the mane, tail and legs; but also reddish or tan areas around the eyes, muzzle, behind the elbow
A seal brown gelding
The tan hair around the eyes and muzzle with a very dark body color is typical of seal brown.
This horse looks "brown", but the non-black lower legs give him away as a dark liver chestnut.
In rabbits and other species, the black and tan color comes from an allele of the agouti gene called at.
Horses exhibit a diverse array of coat colors and distinctive markings. A specialized vocabulary has evolved to describe them.
Seal brown (horse)
…Seal brown is a hair coat color of horses characterized by a near-black body color; with black points, the mane, tail and legs; but also reddish or tan areas around the eyes, muzzle…
Three horses with different coat colors
Bay (left) and chestnut (right)
A bay horse, showing black points