If there's a dog breed that was literally born to be royalty, it's the Cavalier King Charles Spaniel. With those impossibly soft, soulful eyes, silky flowing ears, and a gentle disposition that makes them the ultimate companion lap dog, Cavaliers have been the darlings of nobility for centuries — and it shows. They carry themselves with an effortless elegance that makes grumpy monarchs instantly melt and makes everyone else in...