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https://knowablemagazine.org/article/mind/2021/are-spiders-intelligent
Portia employs a clever trick. Euryattus females build nests in curled-up dead leaves suspended in air by silk attached to rocks or vegetation. Courting males crawl down the silk suspension ropes, stand on top of the nest and shake it in a specific way. The signal draws the female out of the nest. Portia appears to take advantage of this system by mimicking the male’s shake and luring the female into an ambush.
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Octopus Dreaming