This horse is a sabino. The overo gene does not exist in the Welsh breed. Correction to whomever posted this. There are three types of Overo, Sabino, Splash and Frame, his sire is a splash, he is a splash with probably sabino and he is also a rabicino. Sabino and Spalsh overo do exist in the welsh breed Frame does not, check out www.thepromisewelsh.com if you want some nice examples.