I gave my long haired guinea pig a bath earlier and I noticed that she has a largish lump on her side, at first I thought it might be a cyst but I then noticed it's an open wound and it's very yellow and lumpy. (I'm not too sure how to attach a photo but I'm trying!) I am going to take her to the vet tomorrow but I am quite concerned, has anyone got any help/advice as to what it might be? would be really thankful xx
