My guinea pig is still young but was used to vegetables before I got him. I wasnt sure which veggies so I just intoruced them all slowly. He now eats a good varitey of vegetables and he is about 3/4 months old. Today I picked up some Kale and wondering could he eat that? I also picked up some oranges (clementines) wondering can he eat that as I heard young guinea pigs can't. If he can how would I serve it to him and how often? Would I just give him a segment of the orange? Also I give him about a cup or vegetables every morning, is that enough?