For those who'd like to know a bit more about colour and how it works in horses, here's a very quick guide....
Some quick definitions.
1. Tobiano
Tobiano is the gene responsible for what most of us know as coloured horses. It causes white patches on the base colour, and is what's called a 'simple dominant' - that means if a horse carries the tobiano gene, it will show tobiano colouring.
Tobianos usually have dark heads, white legs (up to the knee at least), white at the top of the dock and dark at the end, and can have ermine marks, spots, and roaning or bleeding of colour at the edges of patches. The spine is often white (although minimally marked tobianos sometimes have no more than a small patch of white on the neck or shoulder) and the flanks often dark.
Extreme white markings on the face are not down to tobiano, even when they appear on a tobiano horse - they are the result of another gene (or two!).
Some quick definitions.
1. Tobiano
Tobiano is the gene responsible for what most of us know as coloured horses. It causes white patches on the base colour, and is what's called a 'simple dominant' - that means if a horse carries the tobiano gene, it will show tobiano colouring.
Tobianos usually have dark heads, white legs (up to the knee at least), white at the top of the dock and dark at the end, and can have ermine marks, spots, and roaning or bleeding of colour at the edges of patches. The spine is often white (although minimally marked tobianos sometimes have no more than a small patch of white on the neck or shoulder) and the flanks often dark.
Extreme white markings on the face are not down to tobiano, even when they appear on a tobiano horse - they are the result of another gene (or two!).