Pied or piebald is a color pattern of horses distinguished by large black patches on a white coat. The term ‘piebald’ has evolved from two words ‘pie’ for magpie, and ‘bald’ for white patch. In the UK, the color combinations ‘piebald’ and ‘skewbald’ (white with another color other than black) are collectively called ‘colored’. In the US, the word used for describing this color pattern is ‘pinto’. Piebald horses have a black base coat with a gene for one of the spotting patterns, including, tobiano, sabino, splash overo, and frame.