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The dog’s baby teeth are balanced so there are 14 in the upper jaw, and 14 in the lower jaw. The adult dog adds another premolar to the upper and lower jaw, two molars to the upper jaw and one molar to the lower jaw—increasing the teeth by 7 to each side or 14 overall. Permanent teeth erupt earlier in large breed dogs than in small breed dogs.
The cat’s baby teeth have three premolars on the upper jaw and only 2 premolars on the lower jaw. This arrangement continues in the adult, but the adult cat adds a molar upper and lower jaw behind these premolars—increasing the teeth by 2 on each side, or 4 overall.
| How to tell a puppy’s age by its teeth |
| Dog's Incisors |
Age at eruption of permanent teeth |
| Central incisors |
2-5 months |
| Intermediate incisors |
2-5 months |
| Corner incisors |
4-5 months |
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| Canine |
5-6 months |
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| Premolars |
|
| 1st premolar |
4-5 months |
| 2nd premolar |
6 months |
| 3rd premolar |
6 months |
| 4th premolar |
4-5 months |
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| Molars |
|
| 1st molar |
5-6 months |
| 2nd molar |
6-7 months |
| 3rd molar |
6-7 months |
Dog Permanent Dentition and the Number of Roots |
| Lower Jaw or Mandible |
Dog tooth |
Roots |
| Incisors |
1st, 2nd, 3rd |
1 |
| Canines |
1 |
1 |
| Premolars |
1st |
1 |
| Premolars |
2nd, 3rd, 4th |
2 |
| Molars |
1st, 2nd |
2 |
| Molars |
3rd |
1 or 2 |
| Upper Jaw or Maxilla |
Dog tooth |
Roots |
| Incisors |
1st, 2nd, 3rd |
1 |
| Canines |
1 |
1 |
| Premolars |
1st |
1 |
| Premolars |
2nd, 3rd |
2 (3rd may also have 3 roots) |
| Premolars |
4th |
3 |
| Molars |
1st, 2nd |
3 |
Cat Permanent Dentition and the Number of Roots |
| Lower Jaw or Mandible |
Cat tooth |
Roots |
| Incisors |
1st, 2nd, 3rd |
1 |
| Canines |
1 |
1 |
| Premolars |
1st, 2nd |
Not present |
| Premolars |
3rd, 4th |
2 |
| Molars |
1st |
2 |
| Upper Jaw or Maxilla |
Cat tooth |
Roots |
| Incisors |
1st, 2nd, 3rd |
1 |
| Canines |
1 |
1 |
| Premolars |
1st |
Not present |
| Premolars |
2nd |
1 |
| Premolars |
3rd |
2 or 3 |
| Premolars |
4th |
3 |
| Molars |
1st |
1 or 2 |
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The articles here were answered by a variety of pharmacists and veterinarians
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