Ideally, 12" to 13".
Blenheim - Rich chestnut markings well broken up on a clear, pearly white ground. Tricolor - Jet black markings well broken up on a clear, pearly white ground. Ruby - Whole-colored rich red. Black and Tan - Jet black with rich, bright tan markings over eyes, on cheeks, inside ears, on chest, legs, and on underside of tail.