Spider
 Spider (order Araneida or Araneae), any of about 42,700 species of arachnids that differ from insects in having eight legs rather than six and in having the body divided into two parts rather than three. The use of silk
 is highly developed among spiders. Spider behaviour and appearance are 
diverse, and the araneids outside Europe, Japan, and North America have 
not been thoroughly collected and studied.All spiders are predators, feeding almost entirely on other arthropods,
 especially insects. Some spiders are active hunters that chase and 
overpower their prey. These typically have a well-developed sense of 
touch or sight.

 
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