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I was stroking my 6 year old female guinea pig and found a small blackish scab on her back, along with what looks like a spur. It is painful for her if I tap it even lightly. I'm not sure whether it is something like mange or not because she doesn't seem to be itching. She has a cage mate and...

One of our boars has something hanging from his anal area - looks bobbly like a brain - pale pinkish. It's near the two testicles which look normal. Doesn't seem to be bothering him and he appears normal other than this. I've not noticed it before. It's quite big, bigger than a grape for eg...