Cats start out with 26 deciduous teeth. By six months of age, these baby teeth fall out and are replaced by permanent teeth, 30 in the cat. Cats have 30 teeth (12 incisors, 10 premolars, 4 canines, and 4 molars), while dogs have 42. Kittens have baby teeth, which are replaced by permanent teeth around the age of 7 months. Feline kittens have 26 deciduous teeth, and adult cats have 30 permanent teeth. Most of the teeth in a cat are very small and you can only see them if you look very close. Permanent dentition: 2(I 3/3 C 1/1 P 3/2 M 1/1) = 2(8/7) = 2(15) = 30 teeth.