My hamster died after about 4-5 months with him, what happened?

Question

I still don't know what went wrong. It has been about a year since it happened but i still haven't got an answer. Long story short, my sibeirian hami got REALY big in a short amount of time. I mean abnormaly big (about the size of a palm). He stopped walking around his cage except for when i got him to move like 2 cm. And he had a weird hair growth on his belly. One day I came home and he was dead??? What happened.

Answer 1

he could of had a tumor or something. my friends hampster did that. got fat and didnt move.

Answer 2

I think you fed him too much and he was obeese. Also, his cage might not have been very sanitary

Answer 3

Possibly a tumour in his stomach or around that area, hamsters are prone to cancer.