加州王蛇於1998被帶到加那利群島的大加那利島作寵物，牠們被擅自野放後不斷繁殖，成為入侵物種。牠們捕食原生的爬行動物，導致大部份原生爬行動物面臨滅絕的威脅。

California kingsnakes were brought to the Gran Canaria in the Canary Islands in 1998 as pets; they were released by pet owners and stated to reproduce on the island. They became invasive and prey on native reptiles, putting most native reptiles at risk of extinction.

https://phys.org/news/2021-12-invasive-snake-gran-canaria-native.html