Wild Vallumraptors can pick up dropped Dinosaur Nuggets in the world, which they will still eat, entering the relaxed state during which they can be tamed with Serene Salad. This may be intentional to allow Vallumraptor taming when the mobGriefing gamerule is disabled, however the Cave Compendium entry implies that they can only be tamed should they take the food from a chest specifically, which is inconsistent with their actual behavior.