I have a 12 year old gelding, who last summer started getting Birdcatcher spots. These are white spots, about 1 inch in diameter, scattered on the body, named after a very famous Thoroughbred from the 1800s. My horse now has about ten of these spots. I have researched them, and there does not seem to be any scientifically explained cause. Now that I know what they are, I have seen them on other breeds in my barn. Has anyone else seen them on a Peruvian Paso?