Does anyone know if they truly yawn or not? I was about to post a thread about this today because I was so curious. My girl and boy both do this at least once each time I take them out. Also after they eat. I seldom see the colubrids do this, although I have once or twice.

I know yawning has something to do with needing more oxygen in mammals. Snakes do require oxygen, so maybe it's dual-purpose. It's so darn cute though!