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