pig losing weight

This might be a bit of a long post I apologise in advance. I’ve got a male DEW guinea pig (not sure of his age, possibly around 2) who has had a few issues over the last couple of months but in the last few days it’s gotten really concerning. Tofu has something i’ve never seen or heard of...

Hi. A few years ago, We had a pig that mostly stopped eating, our vets operated on his teeth under anaesthetic. Following that, he never ate again and they put him down. This time, with 2 three year olds, One has again nearly stopped eating. I told the vets, who were going to operate on his...