HUMAN YEARS / 01
Standard Manchester Terrier
Life expectancy about 15 to 17 years
Rat Terrier age calculator
A 5-year-old Rat Terrier is about 39 in human years. Life expectancy is about 12 to 18 years.
In human years
about 29
At 3 years, your Rat Terrier is about 29 in human years.
Life stage
Adult
Settled into who they are, with routines that suit you both.
Life expectancy for the Rat Terrier is about 12 to 18 years, so yours is in the early chapters.
Track their birthday and weight in Paww.
Rat Terrier age in human years
| Dog age | Human years | Life stage |
|---|---|---|
| 1 year | about 15 | Young adult |
| 2 years | about 24 | Young adult |
| 3 years | about 29 | Adult |
| 4 years | about 34 | Adult |
| 5 years | about 39 | Adult |
| 6 years | about 44 | Adult |
| 7 years | about 49 | Adult |
| 8 years | about 54 | Senior |
| 9 years | about 59 | Senior |
| 10 years | about 64 | Senior |
| 11 years | about 69 | Senior |
| 12 years | about 74 | Senior |
| 13 years | about 79 | Senior |
| 14 years | about 84 | Senior |
| 15 years | about 89 | Senior |
| 16 years | about 94 | Senior |
| 17 years | about 99 | Senior |
| 18 years | about 104 | Senior |
It’s a friendly rule of thumb, not a measurement, and every dog ages in their own way.
Rat Terrier questions
How old is a 5-year-old Rat Terrier in human years?
About 39. The first year counts as about 15 human years and the second adds about 9, so at two the Rat Terrier is about 24. After that each year adds about 5, the pace for a medium dog.
What is the life expectancy of the Rat Terrier?
About 12 to 18 years. That is a breed-wide figure, not a prediction for one dog. Ask your vet about your dog's health.
When is the Rat Terrier considered a senior?
From about 8 years, which is about 54 in human years. Bigger dogs tend to reach their senior years sooner than small dogs. Your vet can tell you what this stage means for your dog.
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