The cat has two sets of teeth during its lifetime. The 26 deciduous teeth (baby, milk, or kitten teeth) begin to erupt when kittens are about 21 days old (incisors) and are fully erupted by 5 to 6-weeks-of-age (premolars). The 30 permanent teeth begin to erupt when kittens are about 4 months of age and are complete for most cats by 6 months of age. The cat’s permanent teeth follow the pattern seen in most carnivores although there are fewer.
Dentition of the adult cat:
Here is some more detail on the time of teeth eruption:
|Cat Teeth||Age they erupt|
|Incisors (baby)||2 – 3 weeks|
|Canines (baby)||3 – 4 weeks|
|Premolars (baby)||3 – 6 weeks|
|Incisors (permanent)||3 – 4 months|
|Canines (permanent)||4 – 6 months|
|Premolars and molars||4 – 6 months|
Source: Michael and The Cat It’s Behavior, Nutrition & Health.