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It's called a silverfish, hun.
They eat practically everything...
http://en.wikipedia.org/wiki/Silverfish..
Those look like cutter ants.
The reptile in your photo has the ridges in above and in front of it's eyes, I believe. I'm not an expert, but I hope this helps! :-)
Due to the narrow width at the tip of its snout, it looks to be a Caiman. But I'm not entirely sure. They aren't as big as Crocodiles.
This guy has a worm-like tongue that he uses to lure fish into his open mouth. When prey latch on to the "worm", he bites down and has lunch.
Thanks! I'm not sure, either. It was about 3 feet from the top of my head. I was only able to get two photos of it before it flew away. I have seen several of the same around the area. If I see anymore, I'll be sure to photograph the areas you specified and post. :-) Thanks for the help!