Human Years Dog: Know How to Calculate Correctly?

That the age of the animals not accounted for in the same way that humans do, we already know. But you know to correctly calculate human years dog? So you see.

Human Years Dog Know How to Calculate Correctly

If you have a dog, you very probably heard this rule: one year of dog is equivalent to seven human years.But it is not so.

The human years to dog have a specific calculation that also depends on the size of the animal: the dogs are smaller tend to live longer than dogs of larger size, however, can mature more rapidly in the first years of life.


So, to take all the doubts, the following table will give you all the answers about the human years of the dog:

Size of the dog Small (up to 15kg) Medium (between 15kg to 45kg) Large (more than 45kg)
The age of the dog Age in human
1  15  15  15
2 24 24 24
3 28 28 28
4 32 32 32
5 36 36 36
6 40 42 45
7 44 47 50
8 48 51 55
9 52 56 61
10 56 60 66
11 60 65 72
12 64 69 77
13 68 74 82
14 72 78 88
15 76 83 93
16 80 87 120



Now that you have understood the issues inherent in the calculation of human years to dog, it is time to realize the more important matters, to know better the your four-legged friend. Just so you know that you are properly prepared and informed to make always the best possible for your companion:

  • In general, a dog is considered old when it reaches three-quarters of the life expectancy;
  • The life expectancy of an animal varies depending primarily on breed and size of dog. However there are other factors to take into account, like nutrition, life style and genetic factors. So, to ensure your dog a long and happy life, he must have adequate food, practice physical exercise and do check-upsregularly.


If you adopted a dog, but do not know its history nor do you know how many years, then, there are some details that have to be aware of to establish with some accuracy the age, namely, the teeth:

  • Up to 8 weeks: still has the milk teeth;
  • Up to 7 months: already has permanent teeth fully white;
  • Between 1 to 2 years: teeth are more spleens and the rear teeth may show signs of yellowing;
  • Between 3 to 5 years: the teeth may present accumulation of tartar and some wear and tear;
  • Between 5 to 10 years: teeth show more wear and signs of disease;
  • Between 10 and 15 years: teeth are worn, and the accumulation of tartar is very visible, as well as the absence of a few teeth.

In addition, if you choose to take the animal to the veterinarian, the professional may also do a more rigorous evaluation to understand the age. This implies the achievement of a complete physical exam or tests that analyze the bones, joints, muscles and internal organs.

The senior dogs may show some signs specific to aging, such as eyes cloudy; by gray, mainly in the center of the snout; skin flabby and legs rigid.