We're new to beardies, so we're trying to figure this all out. We've got two juvenile ones...not too big at all. Right now, they're being offered romaine, kale, and either zucchini or squash. I peel the zucchini or squash and dice it really small. I've read about grating, but I'd think small dices (I mean tiny) would be fine, too. I gave them cucumber and pineapple yesterday (b/c I hadn't made it to the store), and they ate the cucumber but not the pineapple. They wouldn't touch apple yesterday either. So, I'm sure there'll be a lot of trial and error to determine what they will eat.