Arguably one of the best studied systems for coevolution resides in the mountains of Oregon: a very toxic newt and the very resistant snakes that eat them.
How did it become the best studied system for coevolution? The story starts when a young undergraduate student heard a story about three hunters who were found dead at their campsite, with no sign of theft, struggle or foul play. The only explanation of their mortality was a newt, that had accidentally been boiled in their coffee pots. Curious as to how a newt could take down three grown men, our undergraduate, Edmund Brodie Jr.
He dedicated years to studying these newts, while his son, Edmund Brodie III, focused on the snakes.