#crawdad__crayfish__crawfish__ecrevisse  tiny lobster-like crustaceans usually boiled briefly
  supertype:  shellfish  meat of edible aquatic invertebrate with a shell (especially a mollusk or crustacean)
  part of:  Old_World_crayfish__ecrevisse  small crayfish of Europe and Asia and western North America
  part of:  American_crayfish  common large crayfishes of eastern North America

No statement uses or specializes crawdad; click here to add one.