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🐾 Pet Age Calculator

Convert your pet's age to human years using scientifically accurate formulas — not the outdated "multiply by 7" myth. Works for dogs, cats, rabbits, and guinea pigs.

The Science Behind Dog Aging

A 2020 study published in Cell Systems found that dog aging follows a logarithmic curve based on DNA methylation changes. The AVMA formula used here accounts for the fact that dogs age very rapidly in the first 2 years then slow down significantly.

Human age ≈ 16 × ln(dog age) + 31
'Why do larger dogs age faster?', 'answer' => 'Larger dogs tend to have shorter lifespans because their bodies work harder to maintain a much larger frame. Giant breeds like Great Danes may only live 7–10 years, while small breeds like Chihuahuas routinely live 15–20 years. The exact biological mechanism is still being studied.'], ['question' => 'How old is my cat in human years?', 'answer' => 'The AAFP/AAHA guidelines suggest: a 1-year-old cat ≈ 15 human years; 2 years ≈ 24 years; then each additional year adds about 4 human years. A 10-year-old cat is approximately 56 human years old.'], ['question' => 'When is a pet considered senior?', 'answer' => 'Dogs: small breeds at 10–12 years; large breeds at 7–8 years; giant breeds at 5–6 years. Cats: typically considered senior at 11 years and geriatric at 15+. Regular vet check-ups become more important after these thresholds.'], ['question' => 'How long do rabbits and guinea pigs live?', 'answer' => 'Domestic rabbits typically live 8–12 years. Guinea pigs live 5–7 years. Both have accelerated aging relative to humans — a 5-year-old guinea pig is roughly equivalent to a 40-year-old human.'], ]" />

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