heyas; does the mouth morph open? or is there a posable jaw? the spikes should move with the jaw if it is posable. however, if the mouth opens via head morphs, it won't affect the props. if it is morphs, there are some things you can do: you could turn the mouth morph to 1, move the spikes into the new position, and spawn 'open mouth' morphs for them. you could also, if you were so inclined, slave the spike morphs to the head morph, to make them all move as one unit. you could try inserting a jaw bone into the storybook dragon to make the jaw posable. i dont know how the model looks, so i can't guess how successful that would be. once the jaw bone is in place, parent the props to that, and they will move with it. --or you could just make the spikes the jaw body part.