I am still not sure weather Tutu is pregnant or just fat. I found my Nana's old kitchen scale today (it is not accurate but it gives me an idea). Peanut weighed about 1 lb 14 ounces and Tutu was 2lb 8 ounces. What is the average weight for a pregnant guinea pig? I am not sure if I felt movement or not but her belly looks so much bigger than Peanut's. Does anyone have a picture of a pregnant pig's belly. Thanks