Dog Life Expectancy Calculator

The average dog lives 10-13 years, but this varies widely by size. Toy and small breeds often live 14-18 years, while giant breeds may only live 6-10 years. Mixed breeds tend to live slightly longer than purebreds on average due to greater genetic diversity.

Large dogs age at an accelerated rate compared to small dogs. Research suggests that for every 4.4 pounds (2 kg) of body mass, a dog's lifespan decreases by approximately one month. Large dogs may be more susceptible to age-related diseases and the physiological toll of rapid growth.

Studies show that spayed/neutered dogs live on average 1-2 years longer than intact dogs. This is partly because neutering reduces the risk of certain cancers and eliminates the risk of reproductive diseases. However, timing of spay/neuter should be discussed with your vet.