Dogs and Cats and Age

Question: When does a dog or cat become old?
This is a good question, the answer, it varies, but cats and small dogs are generally considered geriatric at the age of 7 or above. However new guidelines suggest cats are considered geriatric at 11. Larger breed dogs tend to have shorter life spans and are considered geriatric when they are approximately six years of age. Owners tend to want to think of their pet’s age in human terms. While it is not as simple as “1 human year = X cat/dog years”, there are calculations according the AVMA that can help put a pet’s age in human terms:

Age: Human equivalents for older pets

Cat years
Human years
7
54
10
63
15
78
20
97
Dog years
Human years (*dog size lbs)
7
Small – Medium: 44-47
Large – Very large: 50-56
10
Small – Medium: 56-60
Large – Very large: 66-78
15
Small – Medium: 76-83
Large – Very large: 93-115
20
Small – Medium: 96-105
Large: 120
*Small: 0-20 lbs; Medium: 21-50 lbs; Large: 51-90 lbs; Very large: >90 lbs
The oldest recorded age of a cat is 34 years. The oldest recorded age of a dog is 29 years.

Gary Beall DVM
Chip Beall DVM
Springboro Veterinary Hospital
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