When my mum went to give the guinea pigs she saw a massive lump and called me. When I looked I originally thought it was his fur standing up. But I went to touch it and it was a massive lump, I checked the other side and it didn't. It's located under his mouth and above his foot. But I don't know what to do! The vet isn't an option today but I can definitely try tomorrow. We've done nothing out of the ordinary at any time. I'll include a photo as soon as I manage to get one.
Thanks in advance.
Thanks in advance.