Source checked November 12, 2026. Editorial team. Not professionally reviewed.
Stage notes
Choose an age-range comparison
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The early boundary differs
Cats Protection’s lifespan article describes a kitten stage covering the first year and a junior stage covering one to two years. Blue Cross places kittenhood up to six months and the junior stage from six months to two years. The sources therefore use different early boundaries. The tool shows that difference rather than assigning one silently to a real cat.
Cats Protection: How long do pet cats live? · Blue Cross: How long do cats live?
Some later ranges align
Both articles describe three to six years as an adult or prime range, seven to ten as mature, and eleven to fourteen as senior. These are guide labels, not clinical findings. The source notes do not tell us whether a particular cat is healthy, in pain, active, frail or near the end of life. No label replaces an individual assessment.
Cats Protection: How long do pet cats live? · Blue Cross: How long do cats live?
No age test
The cards do not ask someone to inspect teeth, move an animal or test activity to estimate age. They compare already-published ranges. If a cat’s age is unknown, Cats Protection points readers to a vet for an estimate, not an online appearance quiz. The stage notes are deliberately about the article’s structure, not the animal’s body.