Jumping Vampire Spiders Choose Victims by Headwear

Inkfish
By Elizabeth Preston
Jun 7, 2012 11:33 PMNov 5, 2019 12:20 AM

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It's reasonable for a hungry predator to hesitate when its prey appears to be two halves of an animal glued together and hopping up and down. Jumping vampire spiders faced with this decision took it slowly. But they eventually chose the tastiest-looking mosquito, ideally one stuffed full of fresh human blood. In the process, they demonstrated a complex decision-making system.

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