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Some characteristics of a Tovero colored horse include: Dark pigmentation around the ears, sometimes called a "Medicine Hat" or a "War bonnet" Dark pigmentation around the ears, expanding to cover the forehead and/or eyes. Isolated "shield" dark markings completely surrounded by white, particularly on the face or chest. One or both eyes blue.
Most horses have some markings, and they help to identify the horse as a unique individual. Markings are present at birth and do not change over the course of the horse's life. Most markings have pink skin underneath most of the white hairs, though a few faint markings may occasionally have white hair with no underlying pink skin.
This Thoroughbred stallion (W2/+) has one form of dominant white.His skin, hooves, and coat lack pigment cells, giving him a pink-skinned white coat. Dominant white (W) [1] [2] is a group of genetically related coat color alleles on the KIT gene of the horse, best known for producing an all-white coat, but also able to produce various forms of white spotting, as well as bold white markings.
The most popular and acceptable form of white markings on both breeds includes a bold blaze and four even socks. [25] These markings are often described as sabino. In particular, white facial markings often extend to the chin or lip, and may wrap around the head with irregular, feathery borders.
However, his markings are caused by a type of sabino patterning and he has been DNA-tested negative for the OLWS gene. Horses heterozygous for the Ile118Lys mutation on the equine EDNRB gene—carriers of lethal white syndrome—usually exhibit a white-spotting pattern called "frame", or "frame overo".
The most common usage refers to frame overo, but splashed white and sabino are also considered "overo". [2] [3] A horse with both tobiano and overo patterns is called tovero. Frame overo, splashed white, and sabino are three separate pinto patterns, genetically unrelated, that are grouped together under the name "overo".
In other contexts, "solid" may be used to describe a horse with no white markings. Medicine hat: An uncommon pattern, the poll and ears are dark, surrounded completely by white, a true "medicine hat" pinto or paint usually has a predominantly white body, sometimes with dark coloration by the flanks, chest, and above the eyes.
This horse's dorsal stripe is most likely caused by non-dun 1. Less distinct primitive markings can also occur on non-dun horses, even in breeds which are not known to have any dun individuals. The most common primitive marking found is a dorsal stripe. [1] Most non-dun horses do not have darker primitive markings, but some do.