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Dr. Johnson Rescues a Seagull
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How Old Is Your Pet?

Pets do not age in the same manner that people do. To determine the age in human years, find your pet's actual age in the left column. Then find the appropriate column for your pet's adult body size and find the intersection of the two.

Your Pet's Age

 Giant Breed Dogs (90+ lbs) Large Breed Dogs (51-90 lbs) Medium Breed Dogs (21-50 lbs) Small Breed Dogs (20 lbs or less) Cats
1 year 12 14 15 15 24
2 years 20 22 24 24 36
3 years 28 29 29 28 42
4 years 35 34 34 32 45
5 years 42 40 38 36 48
6 years 49 45 42 40 51
7 years 56 50 47 44 54
8 years 64 55 51 48 57
9 years 71 61 56 52 60
10 years 78 66 60 56 63
11 years 86 72 65 60 66
12 years 96 77 69 64 69
13 years 101 82 74 68 72
14 years 108 88 78 72 75
15 years 115 93 83 76 78
16 years 98 87 80 81
17 years 103 92 84 84
18 years 108 96 88 87
19 years 101 92 90
20 years 105 96 93
21 years 100 96
22 years 99