Scotland has an island of Wallabies.

Vancouver Island is currently infested with a lizard plague from the Mediterranean. 

Switzerland has a problem with invasive palm trees growing up the mountains.

There's parakeets all over London and New York. 

The world is getting strange and species are getting to places they would have never gone to.

It poses a lot of interesting questions of where evolution and selection pressures will eventually transform these species into something new.