Size of muzzle: 3.5 8 B3 BX1 - Boxer small DD - Great Dane EM2 - English Mastiff M - malinois R0 R3L 9 B3.5 D - Doberman small DD1 - Great Dane small F - French Bulldog R1 1 R4 4 A - Amstaff B4 D0 - Doberman small bitch DH - Datchhund F1 - French Bulldog Big OB1 R1 - Rottweiler 10 RB - Russian Borzoi 4L B - Boston Terrier BC - Border Collie D1 EB - English Bulldog F2 - French Bulldog Big OB2 R1L 11 RR - Rodesian Ridgeback 5 B0 BG - Beagle D1 - Doberman big EB1 - English Bulldog small GSD - German Shepherd OB3 R2 12 SH - Shih Tzu 2 6 B0.5 BM - Bullmastiff D2 EB2 - big English bulldog, short snout big dogs J1 OB4 R2L 13 SL - Saluki 6L B1 BT D3 EM - English Mastiff J2 P - Pitbull R3 T - Terrier 3 7 B2 BX - Boxer DBD - Dogue de Bordeaux EM1 - English Mastiff R - Rottweiler 0 R3.5