Hi! I adopted two female piggies last year which are about one now. My father keeps saying that I am over feeding my piggies with hay and they will gain wieght and die lol. I obviously know this is not true, but I just need someone help me explain how I am feeding them the correct amount of hay and they are not gaining wieght by the hay (they are the perfect wieght btw) I give them about a handful and a half every morning and night. Thanks!