These sheep are a real problem. But they should not be confused with the color-changing sheep Peredur comes across in the Mabinogion. They might have more in common with Thomas More’s “carnivorous sheep” in Utopia or maybe Polyphemus’ herd of sheep in The Odyssey and Greek myth (at least as understood by Rick Riordan). But in the end my inspiration might have been Wallace and Gromit.