when i was at the petstore the width of the rat looked perfect to the biggest part of my bp even when he had it in his mouth it still looked to be the right size but i guess it was a little bit too big.im going to try a different store that sells only frozen ones and see if the have some smaller ones.i dont think i can feed live anymore cuz before he got the rat he was just hovering right over his head it made me real nervous.