most colubrids of north america flatten their head and body to appear to look more like rattlesnakes. Some even vibrate…He’s just puffing his head up / distorting it to appear larger, more threatening and trying to trick the person/animal…Yeah, I am aware of the tail mimicry but I had no clue they flattened their heads as well. But you learn something new every day. I’ll have to research more into colubrids defense mechanisms.
Learning something new every day is a good thing ^^
Colubrids have a variety of defense mechanisms, some more effective than others!
And then there’s the european grass snake and hognoses which play dead - flipping onto their backs, mouth open and tongue lolling and musk / smell from the cloaca. Though they often will flip themselves onto their back if righted as if insisting they are dead xD
Behaviour is an awesome thing :)