fat guine pig

Hi, I have two boars who share together everything. They eat at the same time and there is no fight. They eat about the same amount of food. However, one is 1050g and the other one is 1400g. I would like my big boy to lose some weight but I don’t want the little one to be even more skinny. Do...

I have 2 guine pigs one is still some what a baby and the other one is a little bit older what is best to feed them I have been feeding them the food you get from Walmart and the youngest one eats all the time and he is alittle fat so idk what to do I have them both in a medium size cage and...