English Toy Spaniel
English Toy Spaniels (also known as the King Charles Spaniel) are often mistaken for their slightly larger cousin, the Cavalier King Charles Spaniel. English Toy Spaniels stand about 10 to 11 inches tall at the shoulder. They generally weigh 8 to 14 pounds.
The Cavalier has a longer snout and a more traditionally shaped “spaniel” head, whereas the traditional King Charles Spaniel has the squashed nose more similar to a Pug. English Toy Spaniels may also have docked tails, rather than the long flowing tail feathers of a Cavalier.
Cocker Spaniels are larger than Cavalier King Charles Spaniels. While occasionally mistaken for Cocker Spaniels because of their general shape and size, Cockers are significantly larger dogs (growing to a shoulder height of 16 inches and weighing up to 30 pounds) with stockier frames and cropped (or “docked”) tails. No one would ever consider docking the beautiful plumed tails of a Cavalier!