When choosing a dog, many people focus on appearance, temperament, or size—but lifespan is just as important. Dogs become family members, and understanding which breeds tend to live longer can help owners prepare for a longer, healthier journey together.

While genetics play a major role, lifestyle, diet, exercise, and veterinary care also significantly affect how long a dog lives. That said, some breeds are naturally predisposed to longer lifespans, often due to their size, genetic diversity, and lower risk of inherited diseases.

In general, small dog breeds live longer than large ones, but there are exceptions. Below are 10 dog breeds known for their impressive longevity, along with insights into why they tend to live longer and what helps keep them healthy.

1. Chihuahua

Average lifespan: 14–18 years (sometimes 20+)

Chihuahuas are famous for their long lives. Despite their tiny size, they are surprisingly resilient and often remain active well into old age.

Their longevity is largely due to:

Small body size (less strain on organs)

Lower risk of cancer compared to large breeds

Health notes:

They can be prone to dental issues and heart problems, so regular checkups are essential.

2. Dachshund

Average lifespan: 12–16 years

Dachshunds, especially miniature ones, are another long-living breed. Their curious nature keeps them mentally engaged, which supports healthy aging.

Why they live long:

Compact size

Strong personality and high alertness

Health notes:

Back problems (intervertebral disc disease) are common, so maintaining a healthy weight is crucial.

3. Toy Poodle

Average lifespan: 14–18 years

Toy Poodles combine intelligence, elegance, and longevity. They’re highly trainable and mentally sharp even in senior years.

Why they age well:

High intelligence supports cognitive health

Generally good genetics

Health notes:

They may experience joint issues or eye conditions with age.

4. Jack Russell Terrier

Average lifespan: 13–16 years

Energetic and fearless, Jack Russell Terriers often stay playful well into their senior years.

Longevity factors:

High activity level

Lean, athletic build

Health notes:

Regular exercise is essential—boredom can lead to destructive behavior rather than health decline.

5. Shih Tzu

Average lifespan: 13–17 years

Originally bred as royal companions, Shih Tzus are known for their affectionate nature and long lifespan.

Why they live long:

Bred primarily as companion dogs, not working dogs

Low aggression and stress levels

Health notes:

Respiratory and eye care are important due to their flat faces.

6. Maltese

Average lifespan: 12–15 years

Maltese dogs are gentle, alert, and deeply bonded to their owners. Their small size and steady temperament support longevity.

Why they age gracefully:

Low body weight

Strong attachment to owners (less stress)

Health notes:

Dental care is especially important, as small breeds often suffer from tooth decay.

7. Beagle

Average lifespan: 12–15 years

Beagles are medium-sized dogs with a surprisingly long lifespan for their size.

Longevity advantages:

Robust immune systems

Active, outdoor-oriented lifestyle

Health notes:

They love food, so obesity can shorten their lifespan if not managed carefully.

8. Lhasa Apso

Average lifespan: 14–18 years

Lhasa Apsos were bred to guard Tibetan monasteries, and their alert nature contributes to both mental and physical resilience.

Why they live long:

Independent but calm temperament

Strong genetic lineage

Health notes:

Kidney and eye health should be monitored as they age.

9. Australian Cattle Dog

Average lifespan: 12–16 years

(Record holder lived 29 years!)

This breed holds the record for the longest-living dog ever recorded. Built for endurance and work, they age exceptionally well when active.

Longevity factors:

Extremely high activity levels

Strong genetics

Health notes:

They require consistent physical and mental stimulation to thrive.

10. Yorkshire Terrier

Average lifespan: 13–16 years

Yorkies may look delicate, but they’re tough, confident, and long-lived.

Why they live long:

Small size

High alertness and engagement

Health notes:

Dental issues and fragile bones require careful handling and routine care.