The oldest pet hamster is the one recorded in the Guinness World Records, and it lived to be 4.5 years old. The owner of this hamster, Karen Smeaton, is from Tyne and Wear, England. Although its name wasn't recorded, it indeed set the record for the lifespan of a hamster.
In addition, there was a hamster named "Shouxing" whose lifespan reached an astonishing 5 years, which is extremely rare among hamsters because the average lifespan of hamsters is usually only 2 to 3 years.
Factors that affect the lifespan of hamsters include the breed, hereditary diseases, environment, diet, and health condition. For example, Roborovski hamsters have a relatively long lifespan and can live up to 3 to 3.5 years. To extend the lifespan of hamsters, it is very important to provide a safe, comfortable, spacious, and hygienic environment. At the same time, pay attention to diet and health management.