The coconut crab (Birgus latro) is the largest terrestrial arthropod in the world. It is a derived hermit crab which is known for its ability to crack coconuts with its strong pincers in order to eat the contents. It is sometimes called the robber crab or palm thief (cf. German Palmendieb), because some coconut crabs are rumored to steal shiny items such as pots and silverware from houses and tents. Another name is the terrestrial hermit crab, due to the use of shells by the young animals (although terrestrial hermit crab also applies to a number of other hermit crabs — see Australian land hermit crab). The coconut crab also has different local names as for example ayuyu in Guam, or unga or kaveu.