This dog has long been popular with nobility and royalty. Among those believed to have kept it are Frederick II, Duke of Swabia; members of the D'Este, Medici and Visconti families; the French kings Louis XI, Charles VIII, Charles IX, Louis XIII and Louis XIV; Frederick the Great of Prussia;:519 Anne of Denmark; Catherine the Great and Queen Victoria. 3 Health. Health problems that can be found in the breed:
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