How Old Do Dogs Get?

Written by Antoinet | May 1, 2025

Dogs are our loyal companions, and of course we want them to stay healthy and happy with us for as long as possible. A dog's lifespan depends on several factors, such as breed, size, and genetic predisposition. In this blog, you'll learn about the average lifespan of a dog, the factors that influence it, and how to help your dog grow old as healthily as possible.

What Is the Average Lifespan of a Dog?

On average, dogs live between 10 and 15 years. Small breeds often live longer than large breeds. For example, Chihuahuas and Toy Poodles can easily live to be 15 years or older, while Great Danes or Saint Bernards often only live around 8 to 10 years.

Mixed-breed dogs tend to live slightly longer than purebred dogs, as they usually suffer less from hereditary conditions. However, there are no guarantees, and a healthy lifestyle plays a major role in how old a dog will ultimately get.

What Determines How Old a Dog Gets?

A dog’s life expectancy depends on several factors.

Dog Breed

Some breeds are naturally healthier and more robust than others. For example, Labradors and Border Collies are known for their good health, while French Bulldogs and Pugs often suffer from breathing problems and other hereditary conditions.

Size of the Dog

In general: small dogs live longer than large dogs. Large breeds grow and develop faster, which puts more strain on their bodies and can contribute to a shorter lifespan.

Hereditary Conditions

Some dog breeds are prone to certain genetic disorders, such as hip dysplasia, heart problems, or cancer. These can greatly impact their life expectancy. By choosing a responsibly bred dog with a healthy genetic background, you can reduce the risk of hereditary diseases.

How Can I Help My Dog Live a Healthy Old Age?

Although you can’t control everything, there’s a lot you can do to help your dog stay as healthy as possible and live a long, happy life.

Good Nutrition for Your Dog

Nutrition plays a major role in your dog’s health. Choose a high-quality, balanced diet that matches your dog’s age, size, and activity level. If your dog is at risk for a certain condition, opt for a maintenance food formulated for specific needs—such as joint support.

Plenty of Exercise

Regular exercise helps your dog maintain a healthy weight, keeps muscles and joints flexible, and prevents boredom. Adjust the amount of exercise to your dog’s age and physical condition:

Young adult dogs are full of energy and need long walks or active playtime.
Older dogs can still enjoy walking but may need shorter, calmer outings.

Proper Care for Your Dog

Good care can prevent certain diseases. Think about:

Vaccinations to prevent contagious diseases
Regular deworming to combat intestinal parasites
Protection against fleas and ticks to prevent skin problems and illnesses
Supplements and diets to support specific organs like joints and kidneys

It’s also important to visit the vet promptly if your dog seems unwell. Don’t wait too long—many conditions can be treated more effectively when caught early.

Do you have questions about your dog’s health or life expectancy?
Feel free to contact our veterinary team at [email protected]