The lifespan of a hamster is only one to three years. Ten days for a hamster is equivalent to a human month; a month is equivalent to a human’s six years; three months is equivalent to a human’s twelve years; half a year is equivalent to a human’s twenty-one years; one year is equivalent to a human’s thirty-five years; two years is equivalent to a human’s seventy-five years.
Therefore, a hamster is considered a juvenile until it is three months old, adulthood is from three months to one and a half years, and it begins to enter old age around one and a half years. If you plan to breed hamsters, it must be done when they are between five to eight months old, as this is when their physical functions are fully developed. After the age of one, they are less suitable for breeding.
The risks of reproduction in middle and old age are very high. Only two types of hamsters have longer lifespans. One is the Roborovski hamster, which has an average lifespan of three to four years or even longer. The other is the Syrian hamster, which has an average lifespan of two to three years, but some can exceed five years.
Original article by KPTer, if reproduced, please cite the source: https://www.kaipet.com/en/hamster-human-age-conversion-chart