The starfish is the only animal capable of turning its stomach inside-out. As it approaches its prey (usually a member of the mollusk family), the starfish reverses its viscera, protrudes them through its mouth, and projects them under the shell of its victim. Then it slowly devours the fleshy underparts of the helpless mollusk by a process of absorption.

The female praying mantis devours the male while they are mating. The male sometimes continues copulating even after the female has bitten his head and part of his upper torso!