How to calculate the age of a dog?

To judge the age of a dog, we can first compare it with the pregnancy of a person. The pregnancy time of dogs is 9 weeks, and that of humans is 9 to 10 months. In other words, a dog's week is equivalent to a man's month, and its average life expectancy is less than a quarter of that of a man. According to this coefficient, we can calculate the age comparison table of dogs and people, which is roughly as follows:

The age of a dog is (equivalent to) the age of a person.

2 months-14 months, 7 -49 years old.

6 months to 5 years, 8 years to 56 years.

8 months -9 years old -9 years old -63 years old

12 months-14 years old 10 years old -65 years old.

18 months -20 years old 1 1 year -7 1 year.

2 -24 years old 12 -75 years old

3 -30 years old 13 -80 years old

4 -36 years old 14 -84 years old.

5 -40 years old 15 -87 years old.

6 to 42 years old 16 to 89 years old.

As can be seen from the above table, it takes only about 18 months for a newborn puppy to mature, which shows that the dog's development period is very short. When mature, dogs can live for about 10 years. The average life span of dogs is 12 to 13 years old (equivalent to 75-80 years old in humans), and 15 years old dogs are already.

In addition, according to the growth, wear and loss of dogs' teeth, the age of dogs can also be roughly calculated. Puppies begin to teether in the third to fourth week after birth and begin to change their teeth in five to six months. After eight months, all the permanent teeth are growing well. Generally speaking, the dog's teeth are white and smooth, and there are no signs of wear. 65,438+0 to 2 years old, the first mandibular incisors are worn. At the age of 4-5, the tip of the first maxillary incisor is worn, and the second maxillary incisor is slightly worn. After 5 years old, all the front teeth are worn out, and occasionally the teeth fall off. From 10 to 12, the teeth began to fall off.