I don't think it's a "scared" thing at all - it's more of an involuntary reaction to something that you didn't know was going to happen at that exact moment. I have a similar reaction when I have to "zombie dance" for longer than usual and I start feeling like they're not going to strike and then out of nowhere WHAM! That same involuntary reaction doesn't happen at all for those snakes that have quicker feeding responses because I'm anticipating their strike sooner.![]()