The Cavalier King Charles Spaniel is a small breed of spaniel classed in the toy group of The Kennel Club, The Canadian Kennel Club and the American Kennel Club,^[1] that originated in the United Kingdom. Since 2000, it has grown in popularity in Canada and  the United States and ranks as the 19th most popular pure-breed in Canada and the United States.^[2] It has a silky, smooth coat and commonly a smooth undocked tail. The breed standard recognizes four colors: Blenheim (chestnut and white), tricolor (black/white/tan), black and tan, and ruby.^[1] The breed is generally friendly, affectionate and good with both children and other animals; however, they require much human interaction. Since they are family dogs, it is recommended to not leave one alone for long periods at a time. The expected average lifespan of a Cavalier King Charles Spaniel is between nine and fourteen years.^[3]