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Dog Years vs Human Years

Dog Years vs Human Years: How Do You Calculate Dog Years

As a dog owner, dog years vs human years is a topic you have thought about at some point. Everyone who owns a dog desires that their pet outlive them. 

However, canines do not live as long as humans. Breed and stature are also essential factors in determining your dog’s age. 

Small canines may develop more rapidly in their early years but live longer overall. A large puppy may mature more slowly at first, but it will be approaching middle age by age five.

This article explains how to convert dog years to human years and also helps you determine your dog’s age.

How to Calculate Dog Years to Human Years

You’ve undoubtedly used this simple math formula to determine your dog’s age in human years: multiply their age in dog years by seven. 

The number was likely derived from the fact that the average lifespan of a dog is ten years, while the average lifespan of a human is 70 years.

However, this rule only sometimes produces the desired outcomes. The lifespan of a dog depends on its breed and dimensions. 

Generally, smaller canines live longer than larger ones. Larger varieties mature quicker due to their shorter lifespans.

Most large and giant dog breeds are considered “seniors” by age five, whereas medium-sized canines do not become elderly until seven. At the age of ten, smaller and miniature breeds mature into adults.

Using the American Veterinary Medical Association’s (AVMA) guidelines, you can also estimate your dog’s age. The formula works for small, medium, and large canines weighing less than 100 pounds:

  • A dog’s first year of existence is equivalent to 15 human years. 
  • The second year of a dog is equivalent to nine human years.
  • Each additional year is equal to four or five adult years.

This strategy takes into account the fact that various dog breeds age differently. Larger canines have a reduced life expectancy than smaller ones. 

For instance, a Great Dane that is seven years old may be considered an elderly dog, whereas a Chihuahua of the same age may not be.

Why Do Smaller Dogs Live Longer than Larger Dogs?

Researchers must understand why smaller canines mature more slowly and live longer than larger dogs. 

According to the American Kennel Club, larger breeds are more likely to develop health concerns as they age.

Similarly, larger canines mature from puppies to adults much more quickly, which increases their susceptibility to cancer, other diseases, and abnormal cell growth. Therefore, thinking that one dog year equals seven human years is inaccurate.

Even though the method discussed is more accurate, more is needed to provide a general answer for how canines age. This depends on many factors, including your dog’s size, breed, and heredity.

Why Is Understanding My Dog’s Age Important?

In general, the following will improve the quality of life for your companion. 

  • A healthy weight and diet
  • Constant mental and physical activity
  • Regular physician visits 

Using a dog age chart to determine your dog’s age in human years is entertaining and informative to learn more about them. 

It is also significant for additional reasons. Knowing your dog’s age and how they change allows you to provide greater care.

Remember that if you have a larger dog breed, you should look for aging signs when the animal is five or six years old. However, if you have a smaller dog, you may notice symptoms when they are seven or eight.

Regardless, as your dog ages, you should pay closer attention to their behavior, activity level, and eating habits.

Can You Help Your Dog Live Longer?

Your dog might not outlive you. However, you can help your dog live a long and joyful existence. Ensure you do the following.

1. Healthy Diet

Dogs can remain content for an extended period if they consume a nutritious meal. Ensure your furry companion has a balanced diet, supplements, and healthy treats.

2. Plenty of Exercise

It is essential for your dog’s health and pleasure that you keep it active with walks and activities. It helps them maintain weight, generate vitality, and maintain a healthy heart and immune system. 

3. Keep Up With Vaccinations

Vaccinations protect your dog from diseases that could be fatal, so make sure you don’t neglect any necessary ones.

4. Regular Vet Checkups

Regularly taking your dog to the veterinarian will allow you to monitor their health. By periodically bringing your companion to the veterinarian, you can detect and sometimes even prevent health problems.

5. Spend as Much Time together as possible

The most essential thing is to show your companion a great deal of affection and care. Gaining strength in this particular link will assist your dog in remaining healthy and content.

Now that you know how to help your dog live comfortably, let’s learn the common signs of aging in dogs.

What Are Common Signs of Aging in Dogs?

If you adopt a dog, you may not know its age. You can estimate their age even if you do not know their date of birth.

Their age can be determined by examining their dentition. These guidelines will vary based on the type of dental care your dog received before adoption.

Dog Age Human Equivalent Indication
8 weeks 3-4 years Baby teeth all grown
7 months 8-10 years All permanent teeth are grown and white
1-2 years 15-24 years Teeth appear dull
3-5 years 28-36 years Plaque build up and teeth start yellowing
5-10 years 36-66 years Teeth show signs of wear
10-15 years 56-93 years Teeth start falling out

A thorough physical examination can also determine your pet’s age. Some tests examine their bones, ligaments, muscles, and internal organs. Age-related symptoms may manifest in senior canines.

  • Loose skin
  • Cloudy eyes
  • Stiff limbs
  • Gray hair from the face and body

Common Health Problems Faced by Older Dogs

Age might not be the only issue for your aging furry friend. Here are some other health problems your dog may be susceptible to if they grow old.

1. Kidney Diseases

It has been discovered that senior canines frequently experience kidney issues. If the illness is not treated or detected promptly, it can lead to numerous other health problems.

Age, genetics, elevated blood pressure, diabetes, and medications that harm the kidneys can all contribute to this.

It is difficult to treat severe kidney disease. But proper maintenance will increase their lifespan. Keep them hydrated, maintain a healthy weight, and provide a balanced diet. Having healthful habits helps maintain healthy kidneys.  

2. Dementia

Cognitive Dysfunction in Dogs, or CCD, is an alternative term for canine dementia. As they age, their cognitive abilities begin to decline. Some symptoms include;

  • Increased barking
  • Forgetting well-learned commands
  • Getting disoriented in familiar places or situations
  • Change in their restroom habits

Even though there is no cure, observing your veterinarian’s medical advice and feeding your companion antioxidant-rich foods can help.

3. Arthritis and Stiff Joints

According to research, one in every five canines has arthritis. Some indications that your dog’s limbs are deteriorating include:

  • Favoring one limb and limps
  • Discomfort when standing
  • Reduced capacity for exercise
  • Declining to use stairs
  • Pain in joints when touched

Specialized or light exercises like swimming or extended walks can increase joint mobility and reduce discomfort. 

Maintaining a healthy weight for your dog can also prevent their joints from becoming rigid. These measures will help alleviate discomfort and delay the progression of the disease.

4. Hearing and Vision Loss

As dogs age, their degrading tissues cause them to lose hearing and vision. Cataracts, cloudy layers that form on the eye’s lens, can also occur in elderly canines. 

Hearing loss and blindness can be caused by numerous factors, including genetics and repeated ear infections.

Dogs, on the other hand, are capable in certain respects. Due to their different physical characteristics, such as their keen sense of scent and ability to pick up on vibrations, they can lead everyday lives.

5. Obesity

Dogs were more active when they were younger. A disparity between the number of calories consumed and the number of calories burned can also contribute to obesity.

It can also result in various health issues, such as diabetes, heart disease, and joint discomfort. To live a healthy life, you must first discover what to feed your old dog and develop an exercise regimen. The mismatch in calories taken in and burned off also leads to obesity.

6. Heart Problems

Similar to humans, our canines can experience heart difficulties. Dogs frequently suffer from congestive heart failure, which makes it difficult for the heart to circulate blood throughout the body.

Here are some signs to watch out for if you intend to heal your pet immediately.

  • Gums and tongue change color
  • Difficulty breathing
  • Frequent coughing after physical activity
  • Obstructed blood flow leading to fainting
  • Being readily exhausted

Take the following into account:

  • Dogs should engage in activities that aren’t straining
  • Providing them with high-quality food appropriate for their age
  • Veterinary exams regularly.
  • Creating a tranquil and stress-free environment to assist those who struggle with anxiety. 


Even though it has been around for a long time, one dog year equals seven human years needs to be revised. Thankfully, the new study has provided dog owners with a more precise method for estimating the age of their canines.

The new arithmetic is more complicated than a simple 1:7 ratio. However, you can use the method explained above to swiftly and efficiently determine the age of your puppy.

Yes, it can be challenging to determine the age of our companion at times. The greatest thing a dog owner could do is monitor their health and provide them with all the affection and enjoyment they deserve.

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