Ok. I know snakes hiss. It's what they do.

But, do they sigh? Like how we or our pet dogs do? I was holding Yzma and she was totally relaxed. She moved her head lazily and there was a short sound like someone breathing through a straw. Her mouth was closed. Same thi g happened when my hubby held her. She was relaxed both times and not agitated.

So, do they sigh like we do, or make small hisses for no apparent reason?