Whippet - Size index: 43.2 - Max height: 22 inches - Max weight: 40 pounds
Polish Lowland sheepdog (tie): - Size index: 42.5 - Max height: 20 inches - Max weight: 50 pounds
English springer spaniel (tie) - Size index: 42.5 - Max height: 20 inches - Max weight: 50 pounds
Australian cattle dog (tie) - Size index: 42.5 - Max height: 20 inches - Max weight: 50 pounds
Spanish water dog: - Size index: 42.2 - Max height: 20 inches - Max weight: 49 pounds
Welsh springer spaniel: - Size index: 42.1 - Max height: 19 inches - Max weight: 55 pounds