What defensive behavior involves the snake stiffening, rolling onto its back, and remaining motionless?

Answer

Death-Feigning (Thanatosis)

When harassed, the snake often engages in death-feigning (thanatosis), rolling onto its back and remaining motionless, which exposes the bright belly.

What defensive behavior involves the snake stiffening, rolling onto its back, and remaining motionless?
animalreptilecharacteristicsnake