Pet age calculator
A pet age is the same calendar arithmetic as any other. What differs is what the number means: a three-year-old rabbit is middle-aged, a three-year-old parrot is barely out of adolescence, and a three-year-old hamster is exceptionally old.
How to work out a pet age
Lifespan varies across pets by more than two orders of magnitude, which is what makes a single "pet years" conversion meaningless. Hamsters live two to three years, rabbits eight to twelve, cats and dogs ten to eighteen depending on size, and larger parrots can outlive their owners. A macaw commonly reaches fifty and sometimes eighty. Any life-stage judgement has to start from the species, not from the number.
Questions
From its date of birth, in years, months and days.
No. Lifespans differ far too much between species for one formula to mean anything.
Eight to twelve years indoors, considerably less outdoors.
Small species around twenty years; large macaws commonly fifty and sometimes eighty.
Use the adoption date as a floor and note it as an estimate. Vets can give a band for most species.