On this Saint Patrick's Day, I was pondering on this thought:
It's a common belief that Saint Patrick rid Ireland of snakes - by chasing them into the sea. It's true that Ireland doesn't have native snakes. But snakes are renown for being cold blooded and Ireland is renown for being cold - making them incompatible (I would have thought). It's likely that Ireland never had snakes to begin with.
Is there any physical evidence that Ireland ever had snakes?