National Geographic: Small Spiders Have Big Brains That Spill Into Their Legs
Such big brains may explain why very small spiders—some less than a millimeter across—are just as good at spinning webs as bigger arachnids.
Photo Credit: Don Johnston
They're not fat, they're just big-brained: Tiny spiders have such huge brains for their body sizes that the organs can spill into the animals' body cavities, a new study shows.




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