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How old is a one year old Shih Tzu in dog years?

Our dogs are perfect for us. There is nothing in them that we do not love. But if we were to identify just one flaw in our dogs, it’s probably something that’s not even within their control. And that would be his age. While humans can live 80 years or more, the sad reality is that our dogs’ lifespans are much shorter. And that makes us sad because it means they won’t be around forever.

On average, dogs will live between the ages of 10 to 18 years. Their life expectancy also depends on their breed, health, and overall lifestyle. The reason why dogs age differently from humans is due to their shorter lifespans. We notice these differences when we compare dogs and humans. Our dogs are considered fully ground adults by the time they are one year old, compared to humans who don’t fully grow until well into their teens. And one year of a dog’s life is equivalent to 4 to 7 human years. That’s a pretty quick difference. But the exact age difference comes down to the breed and size of the dog, as well as its general health. There are some dog breeds that are actually known to age much faster than other dog breeds, so their life expectancy differs by a few years.

How to extend the biological age of your dog

Apart from the equivalence of a dog’s age in human years, what really matters is the biological age of the dog and its life expectancy . To extend it to the maximum it is convenient to:

  • Follow an adequate diet

What are dog years and human years?

The “dog years” are real, but they are not as simple as we once thought. So if the original rule of dog years to human years is outdated, what’s next? According to the American Kennel Club, the «seven year» rule may have been a marketing ploy back in the day. A way to remind pet owners that dogs don’t live as long as we do. So seeing the 7:1 ratio made visiting the vet every year seem even more crucial.

However, the idea of ​​seven years should not be discarded entirely. It can still give you an idea of ​​your dog’s age. But if you’re looking for an exact number of human years to dog years, you’ll have to dig deeper.

Consider your dog’s size, breed, and health concerns for the best results. That will give you a more accurate answer of how many dog ​​years to human years.

Why is it important to understand the age of a dog?

Understanding your dog’s age is important because it helps prepare for anti-aging interventions. You can anticipate age-related problems in your dog and prepare well in advance. With a more accurate calculator, there are greater chances of accurately assessing age and related physical conditions. Dogs, as they age, will require different levels of care, including their nutritional needs, frequency of health checks, level of exercise, and additional supplements needed to maintain good health. Knowing their age and what to expect in each year will ensure that you are proactive in fixing any issues that may arise.

The size and breed of your dog must be taken into account when calculating the age. Small dogs do not fall into the ‘senior dogs’ category even though they may be ten years old. Large dogs, on the other hand, will be considered middle-aged when they are around five years old. There are different ways to get to the age of the dog. One of them is checking his teeth. However, this varies depending on the breed. It also varies depending on the level of dental care the dog has received. Dogs have all their milk teeth when they are eight weeks old. At seven months, they have their permanent teeth. As they get older and between the ages of 1 and 2, their teeth start to turn yellow and dull. Around three years and later, tartar builds up and some wear and tear can be seen on the teeth. This continues for the next few years showing more signs of wear and even a bit of disease. By the time they are ten years old or older, their teeth are quite worn down and some teeth may even be missing.


Checking your dog’s teeth is a good way to start, because they show their true age (to the naked eye) more than almost any other physical feature.

Dogs have all their permanent teeth in place between 6 and 8 months of age (larger breeds take longer).