I was going to get a hamster..
But I saw them and I thought well they sleep all day and there small so I'd end up losing it..
So then I got Misty =]
Then I got Sooty who I wasn't really allowed.. xD
I wasn't actually really allowed a piggie
Hamsters will hibernate when they get too cold. They do not hibernate seasonally like other species though so they don't store up food inside of them to stay asleep for very long. If your hamster is hibernating you need to get him warm so he will wake up or he will starve or dehydrate to death. Unless your aunt's hamster was being kept in very cold temperatures, he likely was in fact dead and not hibernating. It has to be pretty cold for them to hibernate and if he was kept indoors (as hammies normally are) in a controlled environment it's unlikely he was cold enough.
Nope, piggies don't bite too often. That's one of the reasons they are so wonderful!