Samson and Sally

(1984) Samson and Sally is a Danish animated fantasy film directed by Jannik Hastrup. The film is based on a novel called The Song of the Whales by Bent Haller.

Swallow scene
Sally notices that her friend, Samson, has an octopus stuck to his head, and she immediately intervenes to help him deal with the nuisance. Sally pulls on the octopus as Samson begins to struggle, and then releases it as it catapults right into Samson's belly.

https://youtu.be/5YJj6oqEfx4

Predator

 * Samson

Prey

 * Octopus