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 ...

A mighty claw: pinching force of the coconut crab, the largest terrestrial crustacean. PLOS ONE . Published online November 23, 2016. doi: 10.1371/journal.pone.0166108.

Hermit crabs with a greater number of sensory hairs (sensilla) on their claws recover more quickly from startle responses, indicating higher boldness and more consistent behavior.