In Dinosaur Digs, rubble is a type of substance which is caused by dinosaurs. If any dinosaur runs into an object, a crashing noise is heard. The player cannot recover anything smashed by a dinosaur, so the only way to recover is to delete. All animals do not like rubble, thus making the animals unhappy. There is a cheat that reduces the player's zoo to rubble. The cheat is caused when a male maintenance worker is named "The Rock".
The objects that can be turned to rubble are buildings, restrooms, trees, and other scenery.