Okay first you need to understand that technically a "small" rat is a LOT bigger than an adult mouse. An adult mouse is generally about the same size as a rat pup (which is still nursing from it's mother) so a small rat is way too large for your BP in my opinion. Especially if you are considering live feeding. My adult BP's take small rats (sometimes more than one). My younger BP's take much smaller and younger rats. Perhaps having a look at the mice and rat charts at www.rodentpro.com will help you. There is also a description in a sticky in the Feeder Forum that describes the developmental stages of both rats and mice.Originally Posted by jc0716