Size of muzzle: EB1 - English Bulldog small GSD - German Shepherd OB3 12 R2 2 27 5 SL - Saluki B0 BG - Beagle D1 - Doberman big EM1 - English Mastiff 0 R - Rottweiler 15 22 3 R3L 7 B2 BX - Boxer DBD - Dogue de Bordeaux DH - Datchhund F1 - French Bulldog Big OB1 10 R1 - Rottweiler 18 25 4 RR - Rodesian Ridgeback A - Amstaff B4 D0 - Doberman small bitch EB2 - big English bulldog, short snout big dogs J1 OB4 13 R2L 20 28 6 T - Terrier B0.5 BM - Bullmastiff D2 DD - Great Dane EM2 - English Mastiff M - malinois R0 16 23 3.5 R4 8 B3 BX1 - Boxer small EB - English Bulldog F2 - French Bulldog Big OB2 11 R1L 19 26 4L SH - Shih Tzu B - Boston Terrier BC - Border Collie D1 EM - English Mastiff J2 P - Pitbull 14 R3 21 29 R3.5 6L B1 BT D3 DD1 - Great Dane small F - French Bulldog 1 R1 17 24 30 RB - Russian Borzoi 9 B3.5 D - Doberman small