I've heard in Florida there are gators and crocs all around. Obviously, this can present an immediate problem. When relocated, they often return back to the original location (because it's their home). Here is an article about them being thwarted by a magnet strapped to their head. Their internal navigation system, is apparently interfered with by these magnets. I know they're dangerous to have around, but the picture makes me a little sad for the crocs.