The Blubberwing is mentioned only in the beginning of How to Ride a Dragon's Storm through its fat: Viking use it to protect themselves from the icy cold waters of the Sea.
- "Don't be a softy!" roared Gobber. "The Blubberwing fat you have rubbed all over you SHOULD keep you warm enough to prevent actual DEATH ... but its all part of the game of course."
- ―Gobber the Belch
No description or information is given about the Blubberwing, though it might be inferred from its name that it is rather . . . blubbery.
- How to Ride a Dragon's Storm (Book 7), Cressida Cowell. 2008