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arrived19After the mid-20th century, spider research developed rapidly. deadline2011year12moon31Today, there are spiders all over the world110branch3859belong to42751Species (subspecies). Due to varying global geographical and ecological conditions, the distribution of spiders is extremely uneven. These spiders can be roughly divided into three types: hunting spiders, web spiders, and cave spiders. The first type will search for food everywhere, while the second type will lay a net and wait for rabbits to emerge. And most people keep them as pets in the third category: cave spiders. They like to hide in piles of sand or caves, and build nets at the entrance of the cave. The nets themselves are not sticky and are purely used to sense the size of prey and hunt them.
