Dog Lifespan Calculator
Estimate your dog’s life expectancy by breed size
Current Age (years)
Breed Size
Dog Lifespan by Breed Size
One of the most well-established facts in veterinary science is the inverse relationship between dog size and lifespan. Small breeds routinely live 14-16 years; giant breeds often reach only 7-9. Our dog lifespan calculator gives you an estimated life expectancy range and years remaining based on your dog’s current age and breed size.
Life Expectancy by Breed Size
| Size | Life Expectancy | Examples |
|---|---|---|
| Small | 12-16 years | Chihuahua, Shih Tzu, Maltese |
| Medium | 10-13 years | Beagle, Border Collie, Cocker Spaniel |
| Large | 8-12 years | Labrador, German Shepherd, Husky |
| Giant | 6-10 years | Great Dane, Saint Bernard, Mastiff |
FAQs
What is the longest-living dog breed?
Small breeds consistently outlive large ones. The Chihuahua, Dachshund, and Shih Tzu regularly reach 15-17 years. The world’s oldest verified dog on record lived to 29 years (Bobi, a Portuguese dog, certified in 2023). Among named breeds, Bluey the Australian Cattle Dog lived to 29 years and 5 months.
How can I extend my dog’s lifespan?
The five biggest factors: maintaining lean body weight (obesity reduces lifespan by 2+ years), regular veterinary care, dental hygiene (dental disease affects heart and kidney health), quality nutrition, and daily exercise appropriate for age and breed.
Conclusion
Our dog lifespan calculator gives you a personalised life expectancy estimate. For life stage nutrition, use our food calculator. To monitor your dog’s health trajectory, use our age calculator and weight calculator.