Any chance of posting photos of your guinea pigs aichtay? We used to have them as pets when we were kids.
Unfortunately what Chris says is true - they do eat them in South America in much the same way that we might eat rabbits here (not me, I'm veggie).
There was a TV series many years ago called Great Railway Journeys where the presenter stopped at a cafe in the Peruvian Alps and there were guinea pigs running around the floor for customers to pick which one they wanted to eat.
“Men never commit evil so fully and joyfully as when they do it for religious convictions.” – Blaise Pascal