Hi! So I have just adopted two new guinea pigs which I assume are girls. The girl I adopted them from does not really know for sure, that is just what the pet store told them. Anyway, one guinea pig is significantly bigger than they other. One piggie looks pregnant and they other looks like a baby. She told me she fed them a handful of hay, and a huge box of pellets per day. It just confuses me why one is bigger than the other. I am really hoping one of them is not pregnant! So can anyone tell me the signs of being pregnant and if they are not, how to help them loose wieght/cut back on diet? Thank you!