What is a senior dog?

This graphic, provided by The Senior Dogs Project, shows how a dog’s age is determined in part by its size.  Smaller dogs have a longer lifespan and so are classified as senior (or geriatric) at a higher age.

A Dog’s Age in Human Years
Age Up to 20 lbs 21-50 lbs 51-90 lbs Over 90 lbs
5 36 37 40 42
6 40 42 45 49
7 44 47 50 56
8 48 51 55 64
9 52 56 61 71
10 56 60 66 78
11 60 65 72 86
12 64 69 77 93
13 68 74 82 101
14 72 78 88 108
15 76 83 93 115
16 80 87 99 123
17 84 92 104 Red numbers =
senior

Blue numbers =
geriatric
18 88 96 109
19 92 101 115
20 96 105 120
Chart developed by Dr. Fred L. Metzger, DVM, State College, PA. Courtesy of Pfizer Animal Health.

 

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2 responses to “What is a senior dog?

  1. very useful! I never knew there is a difference between senior and geriatric!

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