Oliver is about five months old. I adopted him and his brother back in January and all seemed well until now. I currently have Oliver, Benny (his brother) and Archy living together in a pretty big home. They all get along really well together but recently I noticed a difference between Oliver's genitals and the other guinea's. He seems really swollen compare and he also had some kind of skin issue that leads from his belly to his genitals. It looks like dried skin or how our psoriasis. Does anyone have any idea what it could be? I think I might make a vet appointment anyway to make sure he is okay.