For small dogs add approximately 1/2 inch to the dogs exact circumference of his snout.
For medium dogs add approximately 1inch to 1-1/2 inch to the dogs exact circumference of his snout.
For big and large dogs add approximately 1-1/2 inch to 2 inch to the dogs exact circumference of his snout
Choose muzzle from our sizing chart to fit Jack Russell Terrier breed perfectly
| Wire Muzzle | Wire Muzzle Sizing | Inches (cm) | Inches(cm) |
| Muzzle # | Breeds | Length | Circumference |
| 0 | Very small breeds like Yorkshire Terrier,
Miniature Pinscher, Ratter,
Miniature Schnauzer etc. | 2 inch (5 cm) | 7 inch (18 cm) |
| 1 | 2-1/3 inch (6 cm) | 8 inch (20 cm) |
| 2 | 2-3/4 inch (7 cm) | 8-1/2 inch (22 cm) |
| 3 | 3 inch (7.5 cm) | 10 inch (25.5 cm) |
| 4 | Middle size breeds like Poodle,
Spaniel, Schnauzer,
Foxterrier, Pinscher,
Weimaraner etc. | 3-1/3 inch (8.5 cm) | 10-1/2 inch (27 cm) |
| 5 | 3-3/4 inch (9.5 cm) | 11 inch (28 cm) |
| 6 | Bigger dogs like German Shepherd,
Pointer, Dalmatian, Setter,
Labrador, Golden Retriever,
Poodle (big), Siberian Husky,
Alaskan Malamute etc. | 4 inch (10 cm) | 12-1/2 inch (32 cm) |
| 7 | 4-1/3 inch (11 cm) | 13-1/3 inch (34 cm) |
| 8 | 4-1/3 inch (11 cm) | 13-2/3 inch (35 cm) |
| 9 | 4-2/3 inch (12 cm) | 14-1/3 inch (36.5 cm) |
| 10 | 5 inch (13 cm) | 15-1/3 inch (39 cm) |
| 11 | German Shepherd (big),
other bigger Shepherds, Newfoundland,
other very big dogs | 5-1/2 inch (14 cm) | 17-1/3 inch (44 cm) |
| 12 | Saint Bernard ,
dogs with extra broad snout | 5 inch (13 cm) | 18 inch (46 cm) |
| 13 | Great Dane, dogs with extra big snout | 5-1/2 inch (14 cm) | 17-2/3 inch (45 cm) |
| J1 | Dachshund and other small dogs
with longer snout | 2-3/4 inch (7 cm) | 8 inch (20 cm) |
| J2 | 3 inch (8 cm) | 8-1/3 inch (21 cm) |
| J3 | 3-1/2 inch (9 cm) | 9 inch (23 cm) |
| D1 | Doberman Pinscher, Collie,
Setter, Pointer and other dogs
with longer snout | 4-1/3 inch (11 cm) | 11-1/2 inch (29 cm) |
| D2 | 4-1/2 inch (11.5 cm) | 12 inch (30.5 cm) |
| D3 | 4-2/3 inch (12 cm) | 12-1/2 inch (32 cm) |
| B1 | Boxer and other dogs with short snout | 2 inch (5 cm) | 12 inch (31 cm) |
| B2 | 2-1/3 inch (6 cm) | 13-2/3 inch (35 cm) |
| B3 | 2-3/4 inch (7 cm) | 15 inch (38 cm) |
| R1 | Rottweiler, Golden Retriever,
Labrador, Mastiff, Great Dane,
dogs with broad snout | 3-3/4 inch (9.5 cm) | 13-2/3 inch (35 cm) |
| R2 | 4 inch (10 cm) | 14-1/2 inch (37 cm) |
| R3 | 4 inch (10.5 cm) | 15-1/3 inch (39 cm) |
| Sz1 | Big Schnauzer,
Old English Schepdog,
Bouvier des Flandres | 4 inch (10 cm) | 13-2/3 inch (35 cm) |
| Sz2 | 4-1/3 inch (11 cm) | 15 inch (38 cm) |
I received the replacement muzzle for my dog and it fits perfectly. Thank you very much for your help and I will continue to come back for my future K9 supply needs. Best Regards,
Rating:
[5 of 5 Stars]
Sizing chart
Please touch "+" to see the measurements for each size
0 - Very small breeds:like Yorkshire Terrier, Miniature Pinscher, Ratter
| LengthInches (cm) |
| 2 2/5 inch (6 cm) |
| CircumferenceInches (cm) |
| 6 2/5 inch (16 cm) |
| Eye lineInches (cm) |
| no need |
| Neck CircumferenceInches (cm) |
| 10 - 13 1/5 inch (25 - 33 cm) |
1
| LengthInches (cm) |
| 2 1/5 inch (5.5 cm) |
| CircumferenceInches (cm) |
| 7 1/5 inch (18 cm) |
| Eye lineInches (cm) |
| no need |
| Neck CircumferenceInches (cm) |
| 10 - 14 inch (25 - 35 cm) |
2
| LengthInches (cm) |
| 2 4/5 inch (7 cm) |
| CircumferenceInches (cm) |
| 8 inch (20 cm) |
| Eye lineInches (cm) |
| 2 2/5 - 6 4/5 inch (6 - 17 cm) |
| Neck CircumferenceInches (cm) |
| 10 4/5 - 16 inch (27 - 40 cm) |
3
| LengthInches (cm) |
| 2 3/5 inch (6.5 cm) |
| CircumferenceInches (cm) |
| 8 2/5 inch (21 cm) |
| Eye lineInches (cm) |
| 3 3/5 - 7 1/5 inch (9 - 18 cm) |
| Neck CircumferenceInches (cm) |
| 10 4/5 - 17 1/5 inch (27 - 43 cm) |
4 - Middle size breeds: like Poodle
| LengthInches (cm) |
| 3 3/5 inch (9 cm) |
| CircumferenceInches (cm) |
| 9 3/5 inch (24 cm) |
| Eye lineInches (cm) |
| 2 4/5 - 7 3/5 inch (7 - 19 cm) |
| Neck CircumferenceInches (cm) |
| 14 4/5 - 18 4/5 inch (37 - 47 cm) |
4L - Middle size breeds: like Poodle with longer snout
| LengthInches (cm) |
| 4 1/5 inch (10.5 cm) |
| CircumferenceInches (cm) |
| 10 inch (25 cm) |
| Eye lineInches (cm) |
| 1 3/5 - 6 4/5 inch (4 - 17 cm) |
| Neck CircumferenceInches (cm) |
| 10 4/5 - 20 inch (27 - 50 cm) |
5 - Spaniel, Schnauzer, Foxterrier, Pinscher, Weimaraner etc.
| LengthInches (cm) |
| 4 2/5 inch (11 cm) |
| CircumferenceInches (cm) |
| 10 2/5 inch (26 cm) |
| Eye lineInches (cm) |
| 2 4/5 - 7 3/5 inch (7 - 19 cm) |
| Neck CircumferenceInches (cm) |
| 15 3/5 - 19 3/5 inch (39 - 49 cm) |
6 - Bigger dogs:like German Shepherd
| LengthInches (cm) |
| 4 inch (10 cm) |
| CircumferenceInches (cm) |
| 11 1/5 inch (28 cm) |
| Eye lineInches (cm) |
| 2 3/5 - 8 4/5 inch (6.5 - 22 cm) |
| Neck CircumferenceInches (cm) |
| 16 - 24 2/5 inch (40 - 61 cm) |
6L - Bigger dogs:like German Shepherd,with longer snout
| LengthInches (cm) |
| 4 4/5 inch (12 cm) |
| CircumferenceInches (cm) |
| 12 inch (30 cm) |
| Eye lineInches (cm) |
| 1 3/5 - 8 inch (4 - 20 cm) |
| Neck CircumferenceInches (cm) |
| 12 4/5 - 26 2/5 inch (32 - 66 cm) |
7 - Pointer, Pitbull, Amstaff, Dalmatian, Setter, Labrador, Golden Retriever
| LengthInches (cm) |
| 4 2/5 inch (11 cm) |
| CircumferenceInches (cm) |
| 12 4/5 inch (32 cm) |
| Eye lineInches (cm) |
| 4 - 10 inch (10 - 25 cm) |
| Neck CircumferenceInches (cm) |
| 14 - 25 3/5 inch (35 - 64 cm) |
8 - Poodle (big), Siberian Husky
| LengthInches (cm) |
| 4 3/5 inch (11.5 cm) |
| CircumferenceInches (cm) |
| 14 inch (35 cm) |
| Eye lineInches (cm) |
| 6 - 10 4/5 inch (15 - 27 cm) |
| Neck CircumferenceInches (cm) |
| 20 - 28 inch (50 - 70 cm) |
9 - Alaskan Malamute etc.
| LengthInches (cm) |
| 4 4/5 inch (12.5 cm) |
| CircumferenceInches (cm) |
| 13 3/5 inch (34 cm) |
| Eye lineInches (cm) |
| 7 1/5 - 10 4/5 inch (18 - 27 cm) |
| Neck CircumferenceInches (cm) |
| 20 - 28 inch (50 - 70 cm) |
10 - Caucasian ovcharka
| LengthInches (cm) |
| 4 4/5 inch (12 cm) |
| CircumferenceInches (cm) |
| 15 3/5 inch (39 cm) |
| Eye lineInches (cm) |
| 5 3/5 - 13 3/5 inch (14 - 34 cm) |
| Neck CircumferenceInches (cm) |
| 20 4/5 - 30 inch (52 - 75 cm) |
12 - Dogs with extra broad snout:Saint Bernard
| LengthInches (cm) |
| 5 1/5 inch (13 cm) |
| CircumferenceInches (cm) |
| 19 inch (47.5 cm) |
| Eye lineInches (cm) |
| 7 1/5 - 12 inch (18 - 30 cm) |
| Neck CircumferenceInches (cm) |
| 24 4/5 - 34 2/5 inch (62 - 86 cm) |
13 - Dogs with extra big snout:Great Dane,
| LengthInches (cm) |
| 5 1/5 inch (13 cm) |
| CircumferenceInches (cm) |
| 18 inch (45 cm) |
| Eye lineInches (cm) |
| 7 1/5 - 15 1/5 inch (18 - 38 cm) |
| Neck CircumferenceInches (cm) |
| 24 4/5 - 34 2/5 inch (62 - 86 cm) |
J1 - Small dogs with longer snout
| LengthInches (cm) |
| 3 2/5 inch (8.5 cm) |
| CircumferenceInches (cm) |
| 8 inch (20 cm) |
| Eye lineInches (cm) |
| 3 1/5 - 7 1/5 inch (8 - 18 cm) |
| Neck CircumferenceInches (cm) |
| 6 3/5 - 12 4/5 inch (24 - 32 cm) |
J2 - Dachshund and other small dogs
| LengthInches (cm) |
| 3 3/5 inch (9 cm) |
| CircumferenceInches (cm) |
| 8 4/5 inch (22 cm) |
| Eye lineInches (cm) |
| 3 1/5 - 7 1/5 inch (8 - 18 cm) |
| Neck CircumferenceInches (cm) |
| 10 - 12 4/5 inch (25 - 32 cm) |
D1 - Dogs with longer snout:
| LengthInches (cm) |
| 4 4/5 inch (12 cm) |
| CircumferenceInches (cm) |
| 10 4/5 inch (27 cm) |
| Eye lineInches (cm) |
| 6 4/5 - 8 4/5 inch (17 - 22 cm) |
| Neck CircumferenceInches (cm) |
| 18 - 22 inch (45 - 55 cm) |
D2 - Doberman Pinscher, Collie
| LengthInches (cm) |
| 5 2/5 inch (13.5 cm) |
| CircumferenceInches (cm) |
| 11 1/5 inch (28 cm) |
| Eye lineInches (cm) |
| 4 2/5 - 8 2/5 inch (11 - 21 cm) |
| Neck CircumferenceInches (cm) |
| 14 - 21 1/5 inch (35 - 53 cm) |
D3 - Setter, Pointer and other dogs
| LengthInches (cm) |
| 5 2/5 inch (13.5 cm) |
| CircumferenceInches (cm) |
| 12 inch (30 cm) |
| Eye lineInches (cm) |
| 6 4/5 - 10 inch (17 - 25 cm) |
| Neck CircumferenceInches (cm) |
| 18 4/5 - 22 4/5 inch (47 - 57 cm) |
B0 - French Bulldog, Pug
| LengthInches (cm) |
| 2 3/5 inch (6.5 cm) |
| CircumferenceInches (cm) |
| 10 3/5 inch (26.5 cm) |
| Eye lineInches (cm) |
| 2 4/5 - 7 3/5 inch (7 - 19 cm) |
| Neck CircumferenceInches (cm) |
| 11 1/5 - 20 inch (28 - 50 cm) |
B0.5 - Boston terrier, French Bulldog bitch
| LengthInches (cm) |
| 2 1/5 inch (5.5 cm) |
| CircumferenceInches (cm) |
| 10 inch (25 cm) |
| Eye lineInches (cm) |
| 2 2/5 - 5 3/5 inch (6 - 14 cm) |
| Neck CircumferenceInches (cm) |
| 10 4/5 - 18 2/5 inch (27 - 46 cm) |
B1 - Dog with short snout:Boxer and other dogs with short snout
| LengthInches (cm) |
| 2 3/5 inch (6.5 cm) |
| CircumferenceInches (cm) |
| 11 1/5 inch (28 cm) |
| Eye lineInches (cm) |
| 2 2/5 - 7 3/5 inch (6 - 19 cm) |
| Neck CircumferenceInches (cm) |
| 13 1/5 - 22 inch (33 - 55 cm) |
B2
| LengthInches (cm) |
| 3 inch (7.5 cm) |
| CircumferenceInches (cm) |
| 12 4/5 inch (32 cm) |
| Eye lineInches (cm) |
| 3 - 10 inch (7.5 - 25 cm) |
| Neck CircumferenceInches (cm) |
| 15 1/5 - 24 2/5 inch (38 - 61 cm) |
B3
| LengthInches (cm) |
| 3 1/5 inch (8 cm) |
| CircumferenceInches (cm) |
| 14 inch (35 cm) |
| Eye lineInches (cm) |
| 6 4/5 - 8 4/5 inch (17 - 22 cm) |
| Neck CircumferenceInches (cm) |
| 17 1/5 - 26 inch (43 - 65 cm) |
B3.5 - Bigger male English Bulldog, Dogue De Bordeaux
| LengthInches (cm) |
| 2 4/5 inch (7 cm) |
| CircumferenceInches (cm) |
| 16 2/5 inch (41 cm) |
| Eye lineInches (cm) |
| 2 2/5 - 11 1/5 inch (6 - 28 cm) |
| Neck CircumferenceInches (cm) |
| 16 - 29 1/5 inch (40 - 73 cm) |
B4 - Big American bulldog, bullmastiff, Dogue De Bordeaux
| LengthInches (cm) |
| 3 3/5 inch (9 cm) |
| CircumferenceInches (cm) |
| 18 inch (45 cm) |
| Eye lineInches (cm) |
| 6 - 11 3/5 inch (15 - 29 cm) |
| Neck CircumferenceInches (cm) |
| 25 1/5 - 34 4/5 inch (63 - 87 cm) |
R0 - Pitbull, amstaf and similar
| LengthInches (cm) |
| 3 2/5 inch (8.5 cm) |
| CircumferenceInches (cm) |
| 13 inch (32.5 cm) |
| Eye lineInches (cm) |
| 1 3/5 - 10 2/5 inch (4 - 26 cm) |
| Neck CircumferenceInches (cm) |
| 13 3/5 - 26 2/5 inch (34 - 66 cm) |
R1 - Dogs with broad snout:Rottweiler, Golden Retriever
| LengthInches (cm) |
| 3 4/5 inch (9.5 cm) |
| CircumferenceInches (cm) |
| 14 inch (35 cm) |
| Eye lineInches (cm) |
| 2 4/5 - 7 3/5 inch (7 - 19 cm) |
| Neck CircumferenceInches (cm) |
| 15 1/5 - 24 inch (38 - 60 cm) |
R1L - Dogs with broad snout:Rottweiler, Golden Retriever, with longer snout
| LengthInches (cm) |
| 4 3/5 inch (11.5 cm) |
| CircumferenceInches (cm) |
| 15 1/5 inch (38 cm) |
| Eye lineInches (cm) |
| 1 3/5 - 6 4/5 inch (4 - 17 cm) |
| Neck CircumferenceInches (cm) |
| 12 - 25 1/5 inch (30 - 63 cm) |
R2 - Labrador, Big Pitbull, Amstaff, Rottweiler
| LengthInches (cm) |
| 4 inch (10 cm) |
| CircumferenceInches (cm) |
| 14 2/5 inch (36 cm) |
| Eye lineInches (cm) |
| 3 - 10 4/5 inch (7.5 - 27 cm) |
| Neck CircumferenceInches (cm) |
| 17 1/5 - 26 inch (43 - 65 cm) |
R2L - Big Labrador, Berner Sennenhund, Anatolian Shepherd
| LengthInches (cm) |
| 4 2/5 inch (11 cm) |
| CircumferenceInches (cm) |
| 15 1/5 inch (38 cm) |
| Eye lineInches (cm) |
| 1 3/5 - 10 2/5 inch (4 - 26 cm) |
| Neck CircumferenceInches (cm) |
| 14 - 26 4/5 inch (35 - 67 cm) |
R3 - Bigger Rottweiler, Big Labrador
| LengthInches (cm) |
| 4 inch (10 cm) |
| CircumferenceInches (cm) |
| 15 1/5 inch (38 cm) |
| Eye lineInches (cm) |
| 3 - 10 4/5 inch (7.5 - 27 cm) |
| Neck CircumferenceInches (cm) |
| 21 3/5 - 30 2/5 inch (54 - 76 cm) |
R3L - Bigger Rottweiler, Big Labrador, Berner Sennenhund
| LengthInches (cm) |
| 4 4/5 inch (12.5 cm) |
| CircumferenceInches (cm) |
| 15 4/5 inch (39.5 cm) |
| Eye lineInches (cm) |
| 1 3/5 - 10 2/5 inch (4 - 26 cm) |
| Neck CircumferenceInches (cm) |
| 18 2/5 - 31 1/5 inch (46 - 78 cm) |
R4 - Big American bulldog, bullmastiff
| LengthInches (cm) |
| 4 inch (10 cm) |
| CircumferenceInches (cm) |
| 18 4/5 inch (47 cm) |
| Eye lineInches (cm) |
| 3 1/5 - 12 inch (8 - 30 cm) |
| Neck CircumferenceInches (cm) |
| 24 4/5 - 33 1/5 inch (62 - 83 cm) |
OB1 - Malinois, GSD Bitch, Doberman
| LengthInches (cm) |
| 5 1/5 inch (13 cm) |
| CircumferenceInches (cm) |
| 12 2/5 inch (31 cm) |
| Eye lineInches (cm) |
| 3 1/5 - 10 4/5 inch (8 - 27 cm) |
| Neck CircumferenceInches (cm) |
| 13 1/5 - 22 inch (33 - 55 cm) |
OB2 - Big Malinois, Middle GSD
| LengthInches (cm) |
| 5 3/5 inch (14 cm) |
| CircumferenceInches (cm) |
| 14 inch (35 cm) |
| Eye lineInches (cm) |
| 3 1/5 - 10 4/5 inch (8 - 27 cm) |
| Neck CircumferenceInches (cm) |
| 15 1/5 - 24 inch (38 - 60 cm) |
OB3
| LengthInches (cm) |
| 5 4/5 inch (14.5 cm) |
| CircumferenceInches (cm) |
| 14 4/5 inch (37 cm) |
| Eye lineInches (cm) |
| 3 1/5 - 11 3/5 inch (8 - 29 cm) |
| Neck CircumferenceInches (cm) |
| 21 3/5 - 30 2/5 inch (54 - 76 cm) |
OB4
| LengthInches (cm) |
| 6 inch (15 cm) |
| CircumferenceInches (cm) |
| 16 2/5 inch (41 cm) |
| Eye lineInches (cm) |
| 5 3/5 - 13 3/5 inch (14 - 34 cm) |
| Neck CircumferenceInches (cm) |
| 24 4/5 - 33 1/5 inch (62 - 83 cm) |
BT - Bullterier male
| LengthInches (cm) |
| 5 3/5 inch (14 cm) |
| CircumferenceInches (cm) |
| 14 2/5 inch (36 cm) |
| Eye lineInches (cm) |
| 1 3/5 - 10 2/5 inch (4 - 26 cm) |
| Neck CircumferenceInches (cm) |
| 16 - 28 4/5 inch (40 - 72 cm) |
