Species have been invading new environments since before there were people. Cuba is only 90 miles away, and we're surprised that a nearly identical lizard somehow found his way here? Who cares?
I think it's funny how the same people who freak out over "invasive species" generally consider a human invasion to be good for "diversity". If species were never allowed to invade new environments, 8 billion homo-sapiens would today be packed into three small countries in Africa.
Yes, snakes are (rather lousy) predators. I bet most of the rats they live on will adapt. I just find it really hard to get all that concerned about non-venomous pythons in the jungles of Florida, or non-native Iguanas hanging out on a street in Key West. I even sorta wish some of Tampa's cute monk parakeets would invade the Villages
In fact, I kinda like the brown lizards a little better than the native green ones, to tell you the truth. They seem friendlier and therefore easier to catch, when they get lost in my lanai and need a helping hand to get out.
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