It could be a tooth issue (infection from abscess.damaged tooth). Have you checked her teeth?
It could also be a swollen/ infected gland. Yes, it could be a tumour, but hopefully not. Could you give me a little more information? What type of hamster you're got? What the lump feels like? Is it hard, soft? How long has it been there and how quickly did it form? Is this a solitary hamster or does it have buddies that may have done her an injury (leading to an infection).
i have a whinter white dwarf hamster, today a was petting her and saw the lump it wasnt there before (yesturday) and its hard and right below her left ear when ever i touch it she moves away. What is it? PLEASE HELP?!!!!
I have a hamster the who started with a lump on her cheek so i thought it was an impacted pouch but now it has moved to her head and her eye is fulling open she does not close or blink it what do you think it could be,
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