Either way, a steady diet can assist certain crab species in growing to incredible sizes. The biggest crab in the world, the Japanese spider crab, is capable of achieving a leg span of more than ...

Can one brave freshwater crab stand up to a pride of lions? Watch as a tiny crab finds itself the center of attention among the big cats.

Of the 60,000 species of crustaceans ... also one of the world’s largest arthropods, animals with no backbone, external skeletons, and multiple-jointed appendages. In this crab’s case, those ...