🐱 Feline Health & Longevity AAFP Feline Life Stage Guidelines

Feline biological development is front-loaded in the first two years, followed by steady aging at approximately 4 human years per calendar year. Evaluate your cat\'s cellular maturity and AAFP-defined life stage.

Whole calendar years (0 to 30).
0 to 11 months for sub-year precision.
Outdoor cats face higher injury and disease risk, accelerating biological wear.
For personalized report display.
Scientific Reference: Based on the American Association of Feline Practitioners (AAFP) and International Society of Feline Medicine (ISFM) Feline Life Stage Guidelines. Individual aging varies by breed genetics, dental health, body condition, and environment.
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