It’s no secret that dogs live less than humans. Therefore, pet owners often correlate their age with the duration of human life. Usually, such a comparison is not imperative. Indeed, in most cases, people treat their beloved animals as if they were small children, regardless of their actual biological age. But it is not only out of curiosity that it is possible to correlate the age indicators of a dog and a person. After all, animals, like people, are also subject to age-related changes in the body. How old a pet is for a person is easier to understand by example. There are several ways to compare a dog’s age to a person’s age.
The most visual, but not accurate way
If we conditionally take the life expectancy of dogs and humans, as a ratio of 10 to 70, then the age of the dog just needs to be multiplied by 7. This is very clear and logical. But the x * 7 formula can only be applied with great stretch to small breed dogs. It is no longer applicable with larger animals. The larger the dog, the earlier age-related changes begin.
More complex counting
A more sophisticated counting method was developed based on a study of large dog breeds, namely Labradors between the ages of 4 weeks and 16 years. During the study, observations were made of age-related changes in animal health. It turned out that the ages of dogs and humans are nonlinear in this indicator. Therefore, the mathematical natural logarithm ln was used in the calculation formula. The whole formula looks like this: 16 * ln (dog’s age) +31.
According to this formula, a large-breed one-year-old dog corresponds to the age of a 31-year-old person. Since ln (1) = 0. An animal aged 12 is comparable to a person who has 70 years of life behind him. If we consider the average age value, then ln (6) = 1.7892, 16 * 1.792 + 31 = 59.7. That is, a six-year-old large dog is equated to an almost 60-year-old man.
Method based on the size of the animal
Members of the American Veterinary Association believe that dogs of all breeds under the age of five develop approximately the same way. The first year of an animal’s life is equated to 15 years of human life. According to American experts, differences in the development of age-related changes in breeds of different sizes begin only at the age of six. They combined their data into a table.
Both humans and dogs develop various dental problems with age. Experienced veterinarians are able to determine the age of a dog by the condition of its teeth:
- At the age of two months, the puppy has a full set of milk teeth.
- By the age of 7 months, he already has permanent teeth.
- In the period from 1 to 2 years, the dog’s teeth fade, and the back ones begin to turn yellow.
- From 3 to 5 years, the canines of the animal begin to gradually grind off, tartar appears on the remaining teeth.
- From the age of 5-10 years, there is significant tooth wear and the appearance of various dental problems.
- In the period from 10 to 15 years, there is a lot of tartar, some teeth by this period have already fallen out.
It may seem strange to some, but not only people need to brush their teeth, but dogs.
Did you know that among pet products there are toothpastes and brushes for cats and dogs?