Most pet dogs live 11 to 13 years, but size dominates: toy breeds median 14–17, medium 11–13, large 9–11, giants 7–10. Those are medians — half live longer, and outliers reach the early twenties.
Lifespan table by size
- Toy (under 5 kg): 14–17 years
- Small (5–10 kg): 13–16
- Medium (10–25 kg): 11–13
- Large (25–40 kg): 9–11
- Giant (over 40 kg): 7–10
What moves your dog number
After size, the verified levers are leanness (lifetime calorie-restriction studies added ~2 years in Labradors), dental care, spay/neuter timing per breed guidance, and accident prevention — trauma and toxins cut more dog years short than any disease. Place your dog on the curve with the dog age calculator.
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