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How old your animal really is, and how long it is likely to live
How old your animal really is, and how long it is likely to live: "Multiply by seven" is wrong, and the correct answers now exist: an epigenetic-clock…
This launch guide maps the topic, the source base and the practical questions. Check the linked official authority before acting on a rule, deadline, price or safety requirement.
What this guide covers
"Multiply by seven" is wrong, and the correct answers now exist: an epigenetic-clock conversion for dogs, and published life tables giving life expectancy by breed, by size and by sex, with the feline equivalents beside them.
Pages: the conversion done properly with the working shown, life expectancy by breed with its uncertainty, what shortens it and by how many months, the age at which each size of dog and each cat becomes "senior" and what changes in care then, and the same treatment for rabbits, horses and parrots. A focused example is "Dog years: the formula that replaced multiplying by seven."
How to use it
Use How old your animal really is, and how long it is likely to live to compare stable place facts and official facilities. Live opening, access and disruption information should always be confirmed with the operator before travel.
The page keeps the main question, its evidence base and its limits together in one canonical place. That makes it useful as a quick orientation and avoids splitting a broad subject into shallow pages before each narrower answer has enough verified material of its own.
Search vocabulary in four languages
Terminology changes across borders. These are example phrases people use for the same subject in Estonian, Finnish, Russian and English; they are included as a practical vocabulary aid, not as hidden keywords.
| Language | Example phrase |
|---|---|
| Estonian | koera vanus inimese aastates tabel |
| Finnish | koiran ikä ihmisvuosina taulukko |
| Russian | возраст собаки по человеческим меркам таблица |
| English | dog life expectancy by breed |
Evidence and provenance
The evidence map below records the primary, official or openly licensed material chosen for this guide. It is deliberately visible so a reader can tell the difference between a rule published by an authority, a measured dataset and an editorial explanation.
Source: RVC VetCompass canine and feline life tables (open access, CC BY), the published dog-to-human epigenetic-clock paper, peer-reviewed cohort studies on body condition and lifespan. · checked 2026-09-09
Source names are preserved even where an authority changes its web address. No figure is added to this launch page unless it is already present in the cited source description or can be computed from a named dataset.
Scope and boundaries
This guide owns the explanatory layer for the topic. Personal decisions, diagnoses, legal determinations and live availability remain with the relevant professional or official service.
Connected TempoLife guides
The following paths are the intentional hand-offs named in the brief. They keep adjacent subjects separate while making the next useful reference easy to find.
More Pet Food
Continue to the related TempoLife reference.
More Longevity
Continue to the related TempoLife reference.
Why it belongs on TempoLife
/more/pet-food and /more/longevity.
Frequently asked questions
What does this guide cover?
"Multiply by seven" is wrong, and the correct answers now exist: an epigenetic-clock conversion for dogs, and published life tables giving life expectancy by breed, by size and by sex, with the feline equivalents beside them. Pages: the conversion done properly with the working shown, life expectancy by breed with its uncertainty, what shortens it and by how many months, the age at which each size of dog and each cat becomes "senior" and what changes in care then, and the same treatment for rabbits, horses and…
What evidence does it use?
RVC VetCompass canine and feline life tables (open access, CC BY), the published dog-to-human epigenetic-clock paper, peer-reviewed cohort studies on body condition and lifespan.
Where does this guide stop?
It explains the topic and points to primary or official sources. It does not replace a qualified professional, an official decision, or advice based on your own circumstances.
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