Fireworm (Snotlout's dragon)

She is Snoutlout's orange Monstrous nightmare. she is easily insulted and very aggressive. She has a great sense of smell as shown in the How to Be a Pirate. She is hardly shown only usually saying a nasty comment to toothless. In the dragon rebellion, it's unknown if she joined, but it's most likely because Snoutlout is shown not to have her in futher books.

She is shown more frequently in the Day of the Dreader book. Toothless is left with newborn baby dragons and Fireworm flies through a window in Stoick's house, looking for leftover food from the viking's breakfast. toothless wants to save the baby dragon's, despite how selfish he is. Fireworm sees the egg goo everywhere and knows that the baby dragons have hatched and would love to eat the tasty things. Toothless hastily lies and says he ate the and there are more at the docks. Fireworm believes him and tells him he'd better not be lying(toothless lies as well.) and flew out the window. What happens after she finds out toothless lied is unknown.