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