How exactly does that thing work?
Snakes? Well, they tend to move by using speciaized scales that act like "feet" to propel the snake as it slithers. Some snakes use poison to immobilize/kill their prey before consuming. Others use a constriction method to asphyxiate their prey. All snakes consume their food whole and can dislocate their jaws to consume larger prey.
Oh, you meant the Ergodex. Get on topic, pmyshkin. We're talking about snakes, here.