A nice hard boiled egg chopped up for the nursing moms is always welcome too Jen. Don't forget as well that a bit of whatever you are having for dinner is a good and free source of more protien. Ours love cooked meat scraps, leftover veggies and pasta, bones, etc. I just keep a covered old plastic icecream pail in the fridge and whatevers left on our plates gets scraped into there. It's a gawd awful looking mess but my rats love it when I offer it every other day as a suppliment to their homemade dry mix. Also a bit of cooked and diced chicken hearts/livers are a wonderful thing for the females that have just given birth and you can generally buy those at any grocery store cheap as dirt.