I agree with KMG on that one. Also the post that mentioned only as wide as the largest part of the mid body also. A medium rat size can vary from distributor to distributor. You really have to look at your bp and make a decision based on the bp body circumference. This makes me think about something I heard a long time ago and that is a "adult ball python can survive on medium sized rats all of its life". You can always adjust the frequency of his feedings but this is just a IMO. Good luck.![]()