Although a family has only a short period of more than ten years from raising a dog to the dog's aging, for a dog, this is all of its life. In fact, dogs also have juveniles, middle age and old age, so how do we calculate the age of a dog? In fact, it can be determined by the degree of tooth wear.

How to calculate the age of a dog Judging by the degree of tooth wear

Only thin and sharp deciduous teeth: under two months of age. Replacement of incisors has begun: age two months to four months. Start replacing canines: Age four to six months. Start replacing molars: age six months to ten months. Teeth are fully aligned and white and shiny: about one year old.

The cusps of the lower incisors are partially ground: about two years old. The cusps of the upper incisors are ground flat: about three years old. Both upper and lower incisors begin to wear and yellow: Dogs are four to five years old.