The Cavalier King Charles Spaniel is a breed of dog that originated in England and was bred as a lap dog for royalty. They are known for their friendly, affectionate nature and their distinctive, silky coat that comes in a variety of colors. Cavalier King Charles Spaniels are good with children and make great family pets. They are also highly trainable and excel in obedience and agility competitions. Cavalier King Charles Spaniels are active dogs that require regular exercise and mental stimulation. They are prone to certain health problems, such as heart problems and knee problems, and require regular grooming to maintain their coat. Despite these challenges, Cavalier King Charles Spaniels are a popular breed and make wonderful companion animals.