It depends. Different kinds of crabs have different legs. For example, the swimming crab has eight legs and a pair of spiny feet; King crab has six legs and a pair of spiny feet. Crab is a crustacean, belonging to the mollusk class Decapoda. Its body is protected by a hard shell and it breathes through its gills. Taxonomically, it is similar to shrimp, lobster and hermit crab.

It depends. Different kinds of crabs have different legs. For example, the swimming crab has eight legs and a pair of spiny feet; King crab has six legs and a pair of spiny feet. Crab is a crustacean, belonging to the mollusk class Decapoda. Its body is protected by a hard shell and it breathes through its gills. Taxonomically, it is similar to shrimp, lobster and hermit crab.