Do snakes ever hiss just because? I put a second half-log hide in my tank today and Ronin started exploring it. He then started rubbing his head along the top (as if trying to shed, but he's not shedding). Afterwards, he hissed and kind of contracted his body, twice. This was like 20min after i closed the tank back up, so I know it has nothing to do with me. Was he just hissing for fun?

Benn