Spiders are arthropods, which also include various other "critters" such as insects, centipedes and millipedes. Arthropods have always been among the things that many people fear the most, and people in Taiwan generally believe spiders to be poisonous.
確實，蜘蛛所屬的節肢動物，包括昆蟲、蜈蚣、馬陸等小動物，向來是許多人的最怕，台灣民間就多半將蜘蛛視為毒蟲。