Okay, granted, there may be a few things but that is right at the top of the list! Snakes shed their skin as their bodies grow because their skin does not grow with
them, so they simply take it off in exchange for their new "outfit". The time it takes
to go through the shedding process varies with each individual snake. The places
they choose to help work off their old skin also vary. Ruff objects such as piles of
rocks, twigs and entangled grasses act as good anchors to aid in the process.
   Usually the skin is broken in half or into several pieces as the snake moves around its
surroundings. The freshly shed skins are moist so if not found within a timely period
the skins are often dried or "glued" to whatever article the snake shed it on. This makes it impossible to remove without breaking or crumbling the skin. So, all in all, finding a complete snake skin (head to tail) that you are able to remove from its surroundings in tact is pretty much like seeing a double rainbow!