What is the size of your bci that you are feeding it 2xl rats or how much does that rat weigh? My 1400 gram bci will eat 200 gram rats, sometimes 250-300 but have trouble at the hips. I leave him be for 3-4 days and he eats every 14 days. He did regurge one time because I went in to clean his cage and fresh water a day after he ate.