Thanks. I have no way of weighting her now so I was hoping someone can help eyeball it. What are the reasons for moving to rats early? I am going to order from Layne Labs and I saw that a pinkie rat is approximately 9 to 13 gram (similar to a small mice) and fuzzy rat is 14-19 grams (similar to a medium mice) so if go with rats, I think I should get pinkies. Are there any pros and cos for switching to rats early? If I stay with mice, do you think small mice will work for her just based on eyeballing? I know they can take bigger food items but it is kind of painful for me to watch them swallowing a huge thing through their tiny necks....