There’s a group here in Massachusetts who want to introduce rattlesnakes to an island in the middle of the Quabbin reservoir. Many people are outraged:
http://www.masslive.com/news/index.ssf/2016/02/rattlesnake_island_fisheries_w.html
Why ? We have more now because of the increase in wild turkeys They like turkey eggs. We also have cyotes, deer and Eagles that are new in the last forty years. Last year a momma cougar joined the neighborhood and two years ago a neighbor spotted a black bear. It is getting more wild but the yearly hunting seasons keep everything in control