What is Russian Dwarf Hamsters Lifespan? You need to put this into consideration when getting a pet hamster. Generally, hamsters have a short lifespan. That their lifespan averages 2 years doesn’t mean it won’t die before 1 or 2 years. However, if you possibly can prolong the longevity of your dwarf hamsters by how effectively you care for them. With correct care and constant therapy from a vet. Your hamsters can't hamster wet tail only stay longer but additionally stay wholesome, fun, and pleased.