Crabs are a food source for dragons in the game, DreamWorks Dragons: Wild Skies, as well as food for Vikings in Look And Find: How to Train Your Dragon. Crabs are also mentioned in the game, School of Dragons.
Crabs refer to a group of crustaceans known for their large, single pair of pincers. They occur worldwide in a variety of environments - not only sea water, but also fresh water and land. Roughly speaking, they have an ovoid central body and ten legs radiating outward. Their diet depends on the species and can range from algae and bacteria to molluscs and fish. Like other crustaceans, crabs have no internal skeleton, but rather an exoskeleton. As they grow, they must shed this exoskeleton to compensate, and grow a new one.
|“||The last type of shell is the chitinous shell; crabs, lobsters, and shrimp have a rigid skeleton on the outside of the body that is made of chitin. The chitin protects the delicate tissues and is watertight.||”|
|— Skulder in School of Dragons|
In DreamWorks Dragons: Wild Skies, Crabs are an item that the player must collect to feed to dragons who favor it as a food.
In actuality, crabs are a popular food item across the world for humans. There is little evidence that crabs comprised a significant part of the historical Vikings' diet. However, as many Vikings utilized whatever sea creatures they had at hand along the coastlines, it is entirely plausible crabs were a known edible item. Two species of crabs are native to the northern seas that Vikings may have come across: the Snow Crab and the Brown Crab.
|“||Ow! Something bit me! I'm allergic to sand crabs! They make my toes fan out.||”|
|— Snotlout when he stepped on something sharp|
This children's activity book contains eight scenes for the reader to find hidden objects. In the third scene, there are various food items around the house at the Haddock home, including what appears to be crab stew, complete with red claws poking out of the stew pot.
In this game, the player must acquire the favorite foods to tame certain dragon species. The player needs to purchase a Crab basket to catch crabs at Wreck Reef. Crabs are the favorite food of the Thunderdrum.
Crabs are mentioned briefly in the "Wrath of Stormheart" Expansion. They are mentioned as examples of creatures with chitin exoskeletons. A few red-colored crabs are seen on the sea floor next to Vanaheim.