Cavalier King Charles Dogs Personal Checks feature these toy spaniels in an array of tiny and colorful spunky packages! Cavalier King Charles dogs come in 4 color combinations: Black and tan, Tricolor, ruby, and Blenheim. The Cavalier is one of the larger breeds considered to be in the toy category of dogs. Cavalier King Charles Checks are available in single and duplicate check format. Matching address labels and a coordinating checkbook cover are also available.