All About Pets

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Age equivalents for cats and dogs

Cat and dog owners know that the responsibility of caring for their favorite felines and preferred pooches changes as those animals age. But owners may not know just what constitutes an "aging" pet. Many might go by the popular notion that one dog year is equal to seven human years. But that figure is not quite accurate and is rarely associated with cats, leaving many cat owners to wonder the age equivalents for their furry companions. The American Veterinary Medical Association notes that determining the age equivalent of pets is not as simple as "1 human year = X cat/dog years." In fact, making such determinations is especially difficult with dogs, whose age equivalents depend on the size of the dog. But the AVMA does calculate pet age in human terms, and the following are the equivalents on which they tend to rely.


Cat years    Human years

7        45

10        58

15        75

20        98

Dogs (small-medium)

Dog years    Human years

7        44-47

10        56-60

15        76-83

20        96-105

Dogs (large-very large)

Dog years    Human years

7        50-56

10        66-78

15        93-115

20        120

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