This is the moment a snake yawns with its mouth wide open after a satisfying meal.
Reptile enthusiast Erik Vogel recorded the yawn of his five-year-old favourite gaboon viper inside his home Ohio, USA.
He said: "They will typically yawn like most snakes to reset their jaws after eating.
He is one of my favourites among 140 pet snakes." Gaboons retract backwards when their mouths are closed.
When he yawned, the sheath was exposed to his fang.
They have some of the largest fangs off any snakes - up to two inches in length with the second-highest venom yield of any snake next to the king cobra.