So this head wobble thing, only in the spider morph? Phenomenal. I never would have guessed there would be a trait like this in simply a color morph of an animal, how strange. I wish there would be some formal research on the subject. Interesting.
Well as I understand it. It is in any snake that has a spider gene involved. IE Bumblebees, Spinners and as this guy has, maybe even a normal looking offspring from some sort of spider gene from the parents.