Teeth, Age of dog

There is more variation in small dogs and in dogs with undershot or overshot jaws. Even, bites usually result in excessive wear.

  • 1 ½ yr Cusps worn off lower I 1.

  • 2 ½ yr Cusps worn off lower I 2.

  • 3 ½ yr Cusps worn off upper I 1.

  • 4 ½ yr Cusps worn off upper I 2.

  • 5 yr Cusps of lower I 3 slightly worn. Occlusal surface of lower I 1 and I 2 rectangular. Slight wear of canines.

  • 6 yr Cusps worn off lower I 3. Canines worn blunt. Lower canine shows impression of upper I 3.

  • 7 yr Occlusal surface of lower I 1 elliptical with the long axis sagittal.

  • 8 yr Occlusal surface of lower I 1 inclined forward.

  • 10 yr Lower I 2 and upper I 1 have elliptical occlusal surfaces.

  • 12 yr Incisors begin to fall out (unless care has been taken to maintain healthy gingival and periodontal tissues).


The dental formula for puppies is, 2(Di 3/3 Dc 1/1 Dp 3/3 = 28
The dental formula for adult dogs is, 2(I3/3 C 1/1 P 4/4 M 2/3) = 42

They just fell out, Types Of Teeth, Jaw, Keeping them clean, Tooth Development age of dog