Skeleton

“Whoever had designed the skeletons of creatures had even less imagination than whoever had done the outsides. .. but the bone-builder had generally just put a skull on a ribcage, shoved a pelvis in further along, stuck on some arms and legs and had the rest of the day off. Some ribcages were longer, some legs were shorter, some hands became wings, but they all seemed to be based on one design, one size stretched or shrunk to fit all. ― Terry Pratchett, The Last Continent