Feathering can grow on their ears, feet, legs and tail in adulthood. Standards require this be kept long, with the feathering on the feet a particularly important aspect of the breed's features.The Cavalier King Charles Spaniel and the English Toy Spaniel can often be confused with each other. In the United Kingdom, the English Toy Spaniel is called the King Charles Spaniel, while in the United States, one of the colors of the Toy Spaniel is known as King Charles. As today's Cavaliers all descend from only six dogs, any inheritable disease present in at least one of the original founding dogs can be passed on to a significant proportion of future generations. The Cavalier would go on to be recognized by the American Kennel Club in 1995, and the ACKCSC became the parent club for Cavaliers.