Stl. files for you to print your very own Flame Chompers. Jinx's fiendish little beauties are able to open and close their jaws via lever for added spectacle. Check out the video for more details.
You will need a metal rod of about 3 mm thickness for the eyes (PLA at that diameter just isn't strong enough), and some superglue (not always needed but helpful in keeping it all together).
Use the Z values (in mm) at the end of each part's name to scale them appropriately.