Pastel YellowBelly Head wobble?

[Dumdum333]

Hey! Is it normal for a pastel yellowbelly to have a slight head wobble? It usually seems more prevalent if he's a little bit stressed, and also especially after he's swallowed (like he's trying to shake the mouse down)

[Eru_Iluvatar]

Hello there! No, it is not normal, maybe it's not a head wobble as in the spider gene, it may happen that the snake shakes its head up pand down, mine do it every once in a while.
The movement that she does is called "peristaltic movement" that helps the snake to ingest the mouse and go down smothier.

[cletus]

Sometimes my Pastel YB will look strait up and fall backwards when she is doing her nightly roam around her enclosure. Wouldn't call it a head wobble though.