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...
the rat and human anatomy is so simaler, its easy to tell the rat from the human. but it gets confusing. the rat has the same anatomy as a human but its smaller. if you do a disection of a rat you...