Why the "female" guinea pig has two lumps in the back area?
Channel: Dr David Sing
Date: 03/05/2018

The father brought the guinea pig in for examination as he was worried about 2 big firm lumps about 1 cm x 0.8 cm and thought it was constipation. This is his son's guinea pig and he happened to be at home.

The pet shop had told him he had bought a female guinea pig. This was a male. So the father was relieved that there was no constipation.