My BP is anywhere from 700-900 grams, not sure because I don't have scales. I fed her a "small" rat. -Arctic Mice-brand. I think both of the mice are 50 grams a piece. The box says 100 grams. Well, it left a slight lump in her belly, which pretty much disappeared after 10 minutes and she is still crawling around and climbing, and stretching to the top of the terrarium.. does this mean it was too small and she is still hungry? At 50 grams, wouldn't that be a weaned rat and not small