Any rock mole (including you, if you are polymorphed into one) that eats a wand of death dies instantly.

Rock moles and other item-eating monsters drop any gold or gems they have eaten (digesting them can’t be a fast process), or they destroy 10% of all gold they eat and have a 10% chance of destroying any other items they eat; otherwise those items will be placed in the mole’s inventory.

A monster flag that designates that its inventory is actually the contents of its stomach and is therefore not stealable, nor usable by the monster. Gelatinous cubes, rock moles, and purple worms should get this flag. (Also some other proposed “eater” monsters, like the bookworm.)

If a monster (like a purple worm) eats another monster, that monster’s inventory should be added into the eater’s stomach.

Rock moles (and other tunneling monsters?) can’t eat through wooden doors.

Rock moles can be tamed by throwing a metal weapon at them, which they will catch and eat.