Cat Age FAQs: Senior Care, Longevity & Life Stages

A 1-year-old cat is roughly 15 human years. A 5-year-old is about 36. Our calculator uses the AAHA/AAFP feline life stage guidelines. After age 3, each cat year adds approximately 4 human years — a 10-year-old cat is about 56 human years, and a 15-year-old is about 76.

소스: Cat Age Calculator

AAHA/AAFP 2021 guidelines: Kitten (0-6 months), Junior (7 months-2 years), Prime (3-6 years), Mature (7-10 years), Senior (11-14 years), Geriatric (15+ years). Each stage has different health and checkup needs.

소스: Cat Age Calculator

Indoor cats live 12-18 years on average, with many reaching 20+. Outdoor cats average only 2-5 years due to traffic, predators, disease, and environmental hazards. Key longevity factors include indoor lifestyle, regular veterinary checkups, species-appropriate nutrition, dental care, and maintaining a healthy weight.

소스: Cat Age Calculator

The oldest cat ever recorded was Creme Puff, a domestic shorthair from Austin, Texas, who lived to 38 years and 3 days (1967-2005). The oldest living cat on record (as of 2024) is Flossie, a 28-year-old British tortoiseshell. Indoor cats routinely live 18-25 years with excellent care.

소스: Cat Age Calculator

Cats are considered "Senior" at 11-14 years (roughly 56-76 human years) and "Geriatric" at 15+ years. However, age-related changes begin earlier: kidney function decline can start at 7-8 years, and dental disease is prevalent by age 3. AAFP recommends biannual exams starting at age 7-8.

소스: Senior Cat Care Guide

AAFP recommendations for senior cats (11+ years): biannual exams with blood work (CBC, chemistry, thyroid T4), urinalysis (checking for protein loss and concentration), blood pressure screening (hypertension often accompanies kidney disease and hyperthyroidism), and dental assessment. Early detection of chronic kidney disease is critical — it affects 30-40% of cats over 10.

소스: Senior Cat Care Guide

Cats age similarly to dogs in early years but maintain a more consistent aging rate throughout life. A 10-year-old cat (~56 human years) has aged more slowly than a large-breed dog of the same age (~66-70 human years). Cats' consistent aging rate contributes to their longer average lifespan.

소스: Dog Years vs Cat Years