Behir

The monster makes one attack and uses .

. .

Strength Saving Throw: DC , one the monster can see within .
Failure: damage. The target has the Grappled condition (escape DC ), and it has the Restrained condition until the grapple ends.

Dexterity Saving Throw: DC , each in a -foot-long, -foot-wide .
Failure: damage.
Success: Half damage.

Dexterity Saving Throw: DC , by the monster (the monster can have only one creature swallowed at a time).
Failure: The monster swallows the target, which is no longer Grappled. While swallowed, a creature has the Blinded and Restrained conditions, has Total Cover against attacks and other effects outside the monster, and takes damage at the start of each of the monster's turns.
If the monster takes 30 damage or more on a single turn from the swallowed creature, the monster must succeed on a at the end of that turn or regurgitate the creature, which falls in a space within . of the monster and has the Prone condition. If the monster dies, a swallowed creature is no longer Restrained and can escape from the corpse by using 15 feet of movement, exiting Prone.