Calculate true physiological pet age, life stage, and care milestones using modern veterinary models.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Choose whether you are calculating age for a dog or a cat.
Input current years and months, and select your dog's breed size category.
Review your pet's biological life stage, expected lifespan, and senior wellness advice.
No, veterinary medicine recognizes that dogs age rapidly in their first two years (reaching roughly age 24 in human terms), then age at different rates depending on size (giant breeds age much faster than small breeds).
A 1-year-old cat is roughly 15 human years old, a 2-year-old cat is about 24, and each subsequent calendar year adds approximately 4 human years.
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