How old is a 14-year-old giant dog in human years?

About 108. Here is the chart and what this age means.

Updated October 2026Numbers calculated for this page

A 14-year-old giant dog (over 100 lb) is about 108 in human years.

72small dog, age 14

84medium dog, age 14

96large dog, age 14

108giant dog, age 14

Life stage: Golden years

Senior years. Many vets recommend checkups every six months, bloodwork, joint support and softer exercise. Watch for changes in appetite, thirst, weight and mobility and mention them to your vet.

Giant dog age chart

Dog age	Human years
1	15
2	24
3	31
4	38
5	45
6	52
7	59
8	66
9	73
10	80
11	87
12	94
13	101
14	108

Breeds in the giant group

For example:

Rottweiler Cane Corso Great Dane Mastiff Newfoundland Saint Bernard Bullmastiff Irish Wolfhound Leonberger Anatolian Shepherd Dogue de Bordeaux Neapolitan Mastiff

Keep every vet visit in one place

Pet Health Record (printable) · $3.49

Vaccines, meds, weight and vet visits on one printable record, so every checkup starts with the full picture.

See it on Etsy →

Other ages

10 yrs 11 yrs 12 yrs 13 yrs 14 yrs

Other sizes at this age: small, medium, large.

Questions people ask

Is a 14-year-old giant dog old?

At about 108 in human years, a 14-year-old giant dog is in the "golden years" stage.

Why do bigger dogs age faster?

Larger breeds tend to have shorter lifespans and reach their senior years sooner, so each year counts for more human years.

The Paw Plan shares general pet care information, not veterinary advice. Figures on this page are estimates calculated from the assumptions shown. Every pet is different, so check with your vet about yours.