A robot crab has helped scientists understand how male fiddler crabs compete over females. Male fiddler crabs have one oversized claw, and they attract females by standing outside their burrow and ...

A robot posing as a tough male crab recently challenged real crabs to a showdown during mating season — and the videos are hilarious. The robot, nicknamed "Wavy Dave," infiltrated fiddler crab (Afruca ...

'Heated Rivalry' star didn't expect the show being a global hit ...