Even if it doesn't seem like it, this is not an aggressive attitude: he was simply yawning ...
In fact, when the Vipers cannot escape and are seriously threatening, they curl up "blowing" and are ready to spring forward.
very meaningful face expression, good combination of daylight and artificial light.
(the only thing ... it is a pity that you can read such a lot. It deflects)
all in all: a very good shot! (you can't rebuild the kitchen just fot one photograph)