Posted by:
Dave the Atheist
(
)
Date: March 17, 2019 01:12AM
"Snakes are sneaky. In their 150 million-odd years on this planet, they’ve managed to slither their way into most corners of the world. But Saint Patrick can’t take credit for eliminating our scaly friends from any of them.
Ireland, like pretty much all places without native snakes, never had them to begin with. Some regions are simply too frigid for them. As cold-blooded ectotherms, they rely on their environment to control their body temperature, so few species can live too close to the poles—at least for now.
The common garter snake, Thamnophis sirtalis, can get as far as the southern border of the tundra in North America (though its bodily fluids start to freeze!), but both the Arctic and Antarctic are snake-free.
Similarly, the northernmost bits of Russia, Norway, Sweden, Finland, Canada, and the United States have no native snakes, and the southernmost tip of South America is serpent-less as well. That makes Alaska one of two states to be snake-free, the other being Hawaii. ..."
https://www.popsci.com/places-with-no-snakes