There are a few poisonous snakes here in Florida. I know a fella who got struck on the arm by a 6-7' diamondback. He was wearing a hunting jacket at the time so he didn't get any venom, but the strike was so hard it broke his arm (both bones) The last decade or so we've had problems with collectors and the non-domestic Boas and other assorted escapees and throw aways. A couple years ago there was a local news story about a 20 ft long Python which Animal Control had to remove from under a house. People in the neighborhood had been complaining about missing dogs and cats.
We have a similiar problem with exotic fish. Some of the lakes in South Florida have been known to produce pirahna.
