Goredragons, or rather their feces, are mentioned only once in How to Seize a Dragon's Jewel, as part of the supplemental pages on how to speak Dragonese. "Toothless mak ta me m-m-ost speshally griefspotties. Toothless's runners pop in a cack-cack di Goredragon, plus me pressit muchwide ondi floorsheet.I make you my most heartfelt apologies. I seem to have stepped in Goredragon poo and trodden it all over your carpet." ―Toothless