Death Worm from the Ice and Fire mod. https://www.curseforge.com/minecraft/mc-mods/ice-and-fire-dragons
The pictures explain how the extendable tongue works. If you do not care about the tongue moving the design can be made without the slit at the bottom or the lever.
1. Click on the papercraft design image.
2. Make sure it has not been resized by your browser (you might need to click the image again).
3. Print using your browser's Print function.