Hamster scratching - I think?
Hey, so my hamster has a pink spot with no hair just behind his ear. I've just noticed today so can't have been there long. At first I thought it might be a growth but after a closer look I think it looks more like it's from chafing or scratching. What is this likely to be? And what is likely to be causing it? I've not changed anything in his tank and he is nearly 2 years old so he is used to everything I use. Any opinions would be helpful!
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