I'm just curious how much roughly these girls should be eating. There are three of them, Cupcake is the size of a small kitten, Cinnamon is average adult rat size and Blueberry < no, I didn't name them> is smaller about the size of a large hamster. I feed them about a cup total of diced veggies and rat chow at night. Now I've started giving them about a half cup rat chow snack in the morning. When I go in to wake my daughter they're almost flying through the bars at me. Am I overfeeding them? Do they run to me just cause they want petting or are they hungry? Any ideas???