What Determines a Dog’s Lifespan? 

dog lifespan.

We all wish our pups would live as long as we do, but the sad reality is that their lives are shorter and sweeter than ours. But how long is that, exactly? How long do dogs live? With advancements in veterinary medicine, has the dog’s life expectancy become any longer? 

Below, the team at South Seminole Animal Hospital explores four factors that play a part in the average dog’s lifespan. 

4 Factors That Influence Dog Life Expectancy

Breed and Size

A dog’s lifespan varies by breed and size. In general, smaller dogs usually live longer than their larger counterparts. Small breeds like Chihuahuas, Dachshunds, and Yorkshire Terriers can live anywhere from 13 to 15 years. 

Giant breeds, like Great Dane and Mastiffs tend to achieve a 7-10 year lifespan. 

Why is there such a big difference? 

Scientists aren’t completely sure. But some studies suggest that the reasons have to do with growth rates (and their effect on the dog’s susceptibility to cancer), stress on the dog’s joints and organs, and genetic conditions that can affect specific breeds. 

Nutrition

What a dog eats, and how much she eats, can shape her lifespan. Obviously, excellent lifelong nutrition doesn’t make a pup immortal. But it can positively affect her life expectancy. Dog foods made with high-quality ingredients offer your pup the best chance at a long and healthy life. 

Look for:

  • Protein from clearly-identified sources like chicken, lamb, or beef (instead of by-product meal)
  • Healthy fats from fish oil or flaxseed
  • Whole carbohydrates from sources like sweet potatoes, brown rice, oats, or barley
  • Fruits and veggies for key vitamins and minerals
  • Joint-supporting nutrients like glucosamine, chondroitin, and antioxidants

Make sure you choose foods that align with your dog’s life stage, too. And avoid overfeeding your canine companion, as this can lead to weight gain, obesity, and lifespan-shortening problems like diabetes, certain cancers, and heart problems. 

Exercise 

Regular physical activity helps keep your dog fit, lean, and strong. It also supports your pet’s heart health and joint strength, and it offers a way to stimulate his brain with a plethora of sights, sounds, and smells. 

Taking your pup on a daily walk is good for you, too! Mix up your walks with at-home play, games of fetch, and swimming at lakes, beaches, or dog-friendly pools for joint-friendly exercise. If you need extra ideas, talk to your veterinarian for advice. 

Regular Veterinary Care

Routine veterinary visits are essential for extending your pup’s lifespan. Preventive care offers a strong foundation for a healthy life with immunizations, parasite prevention, dental care, and early disease detection. 

Spaying and neutering your dog can also add years to her life, as it can help reduce the risk of certain types of cancers. 

According to the American Animal Hospital Association, or AAHA, mature dogs should see the vet once or twice a year for wellness checkups. Puppies and aging dogs alike will need more frequent visits to help them stay healthy and make sure they receive the care they need for their specific life stage. Dogs with health conditions may need additional visits, too. 

If your pup is due for a vet visit, reach out to the caring team at South Seminole Animal Hospital. Call us at (407) 831-5205 to schedule an appointment or learn more about how to improve your dog’s lifespan with nutrition, exercise, and preventive care.