I've been worried that I've been overfeeding my boy... he went from 260g on 12/16/15, without having pooped, to 362g on 1/10/16 after having pooped. He's nice and solid, though, and doesn't seem obese... and he's certainly eager to eat more! I'd been giving him an adult mouse every six days, and since I realized how much he'd grown, and he's been acting really hungry, I upped him to two adult mice last feeding. I'd love to switch him to rats - but mice are what I have, and I can't get rats without a three hour drive.