I Started Feeding My Ball Python Hoppers Twice A Week And I Noticed He Wasnt Gaining Any Weight So I Talked To Some Breeders And Told Me To Feed Him Rat Pups. Mice And Rats Are Very Different, Mice Dont Carry A Lot Of Fat But Rats Do. Let's Say You Have An Adult Ball Python Feeding On Mice You Will Have To Feed It More Than One Mice To Fill Him Up. Now With Rats You Will Only Feed Once Instead Of Multiple Mice And Its Way Cheaper. You Can Go To The TheMouseFactory.com For Comparisons Or You Can Go To RodentPro.com It Will Be Helpful If You Post Pictures Of Your BP.![]()