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