the bible never says explicitly that the snake was satan. the last we here of the snake in the bible is that it is cursed to crawl on its belly for the rest of its life, which to me sounds more akin to a native-american creation-myth about how the various animals got their characteristics than the origin-story of any particular person (ie. "and that, kids, is why snakes don't have legs!") the first time we explicitly meet satan in the bible is in the book of job where god asks him what he's been up to and he says he's been walking around the planet.  ...how he get his legs back if he's a snake doomed to crawl on his belly? btw. the running theory is that the chick-snek is lilith. if you don't know who lilith is, she's an apocryphal biblical character who did not make it into the christian canon. you'll have to read some of the expanded universe canon the jews have maintained if you want to know more.
Germany