GeroScience
Size and breed background linked to lifespan in dogs
Median lifespan ranged from 14 years in small dogs to less than 10 years in giant dogs from American Kennel Club-recognized breeds.Median lifespan ranged from 14 years in small dogs to less than 10 years in giant dogs from American Kennel Club-recognized breeds.
Cohort studyPopulations
Who was studied41,047 companion dogs in the United States, median 2.1 years, against toy/small dogs
What changedMedian lifespan was lower in giant dogs: 9–10 years against 13 to 14 years in toy/small dogs
The catchOwner-reported birth dates can be inaccurate, biasing lifespan comparisons across size and breed groups