18-Year-Old Dog: Human Age & Life Stage
See the human-age equivalent, life stage, and care priorities for a dog of this age.
Life stage
104
human years
Life stage
Geriatric
Expected lifespan
12 years
Aging Timeline
About this life stage
Geriatric pets need quarterly vet visits, comfort accommodations (orthopedic bedding, ramps, easy-access litter), and proactive end-of-life planning with your veterinarian.
Popular breeds
Want a more accurate age calculation?
Use the full calculator with breed selection, formula switcher, and detailed life stage info.