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Definitely some time of sphinx moth http://insects.about.com/od/photography/...
Um...I don't think it's a reptile... Chipmunk maybe...
Yes butterfly bush. Buddleja species.
Lol! Yeah, I wasn't gonna touch it!
I did a search for smilax and that does seem to match. It looks like green brier. The picture I took was a younger growth of the plant. I found a more mature vine of it growing nearby and the leaves are all green instead of red. I'm guessing only the younger leaves look red.
Hmm...of all the species of Oenothera that I just browsed through, I think it looks the most like Oenothera biennis.