By Will Dunham WASHINGTON (Reuters) - It may not be wise to get into a scrap with a coconut crab. Its claw is a mighty weapon. Scientists on Wednesday said they measured the pinch strength of this ...

Robot Claw Shows Intricacies of Crab Courtship Scientists in Australia use robotic crab claws to explore the attributes female fiddler crabs look for in a mate. Male fiddler crabs are lopsided.

Male crabs of a species named after actor David Hasselhoff grow bigger claws than females so they can fight each other for a mate, according to a new study. Scientists from the universities of ...