well, one answer i can give you, although not very defined, is the major factor of the spine. snakes have 100-400 vertebrae, while an average human has only 24 vertebrae in the spine. and snakes do...
Actually, the anatomy of a pig is very similar to that of a human. Pigs are often used as human analogs in tests and dissections. Although skeletal structure may differ because humans are bipedal and...