Females on average tend to be better feeders (from what I've been told). and in BPs, being a good feeder is a plus lol. That is another question to ask a breeder... and if you're choosing between similar animals, similar ages, go with the bigger one that eats better. I've had my BPs go on hunger strikes for weeks and even months at a time and it is no fun. Anything you can to do avoid that and get an animal that feeds well and consistently is a good thing.