I (and my siblings) had a total of 6 hamsters. 4 died of old age, 1 suddenly bled out overnight, and 1 died pretty young, but nothing was obviously wrong, so I dunno.

My neighbors had more than a dozen rodents (including 5 guinea pigs). They all died horrifically, including 4 that were killed by mouse traps. Because of course you should have mouse traps, and also keep small rodents that you allow to escape constantly. As an adult, I think the parents were seriously negligent in teaching their children, and then also negligent in buying more rodents for the grinder after the first two or three met horrible fates.