Heterometrus swammerdami
Encyclopedia
Heterometrus swammerdami is one of the largest scorpion
Scorpion
Scorpions are predatory arthropod animals of the order Scorpiones within the class Arachnida. They have eight legs and are easily recognized by the pair of grasping claws and the narrow, segmented tail, often carried in a characteristic forward curve over the back, ending with a venomous stinger...

 species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 in the world. It can reach lengths of over 20 centimetres (7.9 in) and can weigh as much as 56 grams (2 oz). Its venom
Venom
Venom is the general term referring to any variety of toxins used by certain types of animals that inject it into their victims by the means of a bite or a sting...

is not usually lethal to humans because it has evolved to kill its prey by crushing it with its pincers and not by venom.
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