Everyone's heard of Charles the First's talented if impetuous cavalry commander, Prince Rupert of the Rhine (PROTR), but did you know he had a war dog called Boy? Boy was a large and rare hunting poodle(!) given to the prince by the Earl of Arundel when Rupert was imprisoned in Linz during the Thirty years War.
When the English Civil War broke out, Boy joined his master on the Royalist side and valiantly ran with the King's cavalry against the insurrectionist Paliamentarians. These hated Boy with puritan fervor, assigning the dog magical powers.
Boy, they claimed, was a devil dog, a Lapland sorceress in canine form with the ability to speak arcane languages, a mix between Hebrew and High Dutch, apparently. He could prophecy, perform acts of espionage, make himself invisible and far more besides; Boy was bullet and knife proof, a valuable asset on the battlefield.
One Royalist pamphleteer lampoons doggish puritan superstition thus, in Observations Ʋpon Prince Rupert's white Dogge called Boye:
He is weapon-proofe himself, and probably hath made his Master so too, my self and the rest whom you have imployed to be of the conspiracy against him, have alwayes failed of our at∣tempts, as if something more then witchcraft watcht over him. Once I gave him a very hearty stroke, with a confiding Dagger, but it slided off his skin as if it had beene Armour of proofe nointed over with Quick-silver. Besides he hath been tempted with pieces of Capon and other choice morcells, as well seasoned all, as poyson and extemporary prayer could doe it: but the Cur as obstinately rejected them, as if he had knowne beforehand what they were, so that they hurt him no more then the plague-plaister, sent in the Letter did Mr. Pym.