[Natasha95]

I'm really worried about my hamster. She's hasn't wanted to come out of her cage in weeks, she's really jumpy and runs away and hides when she sees me, and she's barely touching her food. I don't know exactly how old she is, but probably about a year and a half, or maybe just a little over a year. Is this normal old-age behavior, or should I take her to the vet?