I have a Thamnophis sirtalis similis (Fl Blue) that has apparently gone crazy. It is acting out completely defensively - ribs flatten, striking at nothing, the works. I've NEVER seen this type of behavoir from this snake, and have had it for about 5 years. Nothing is different about the cage than when I first set it up years ago.

Has anyone ever seen anything like this before? He's gone from a normal snake to completely crazy in the last 2 hours...