I recently bought my first snake four days ago, a Ball Python, and for the most part he seems healthy. He's very active between 8pm till the late hours of the morning it seems like. The person I bought the snake from couldn't tell me too much about it (like the gender) but it's 'around' 8 months old and is 2ft and an inch. It's also on a Thursday feeding schedule so I still got a couple days before I feed it for the first time.

But last night a little after midnight it was making its routine rounds around the perimeter of the terrarium when it suddenly opened its mouth as if it was yawning. It then lifted the first 3" of its neck diagonally and tilted it's head about 90° (the mouth still wide open). Then it curled the lifted portion of its body that was risen in a very unnatural shape. (It wasn't an S shape, more like a W shape if that makes sense). The snake stayed like that for 12 seconds then went back to normal like nothing happened.

Other than this occurance I haven't had any issues with the BP except for some stress still from the transition to a new home. Can anyone give me advice on what might of happened and if it's something I should be worried about? Thanks!