# What is a dog’s and cat’s age equivalent compared to a human?

All animals “age” at different rates, and our domestic dogs and cats are no exception. Unlike humans, these pets seem to age more rapidly in terms of human years, with both animals being of an age equivalent to about 15 human years by the time they are one year old. There are, however, some differences for dogs. Some people have determined an age range depending on the size of the animal. For example, a dog over 90 pounds may only be equivalent to 12 human years by the time it is one year old; a dog 51 to 90 pounds is about 14 human years old when it is one year old; and dogs under 50 pounds are the equivalent of 15 human years by their first year. These age differences are reflected for the entire life of the dog. Below is a simplified table illustrating dog and cat years and their human age equivalents.

 Human AgeEquivalent Cat Age Dog Age 10 years 5 months 13 years 8 months 14 years 10 months 15 years 1 year 1 year 24 years 2 years 2 years 28 years 3 years 32 years 3 years 4 years 36 years 5 years 5 years 40 years 6 years 6 years 44 years 7 years 7 years 48 years 8 years 8 years 52 years 9 years 9 years 56 years 10 years 10 years 60 years 11 years 11 years 64 years 12 years 12 years 68 years 13 years 13 years 72 years 14 years 14 years 76 years 15 years 15 years 80 years 16 years 16 years 84 years 17 years 17 years 88 years 18 years 18 years 89 years 19 years 92 years 19 years 93 years 20 years 96 years 20 years 21 years 99 years 22 years 103 years 23 years 106 years 24 years

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