My guinea pig has a large lump on the side of his neck, what could it be?
Today, I just noticed that my guinea pig has a large lump on the right side of his neck. It would have had to developed this past week. It's not warm, it's not soft, it's not squishy,and nothing is leaking out of it. He doesn't seem to be in pain, he's running around his cage like a normal piggy, he's cleaning himself like a healthy guinea pig would, he's eating and drinking fine, when I touched the strange lump it didn't seem to hurt him, he didn't squel or jerk away or anything. He's acting like a healthy guinea pig, except for that strange lump. I'm not sure what it is though, but my mom and I are going to make an appointment for him and take him to the vet. Btw, he lives in the same enclosure as another male guinea pig, and those are our only 2 current guinea pigs. The other guinea pig is perfectly healthy.