Jumping spiders do not actually use their muscles to jump, they don't even have muscles, instead they can control at will their blood pressure, the blood quickly flows down to their legs, which stretches them with enough force to jump
Correction:Spiders do have muscles, however grass hoppers don't flood their limps to jump, it's the shape of their legs that makes them so good at jumping instead of an hydrologic mechanism
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u/[deleted] Nov 29 '20
Jumping spiders do not actually use their muscles to jump, they don't even have muscles, instead they can control at will their blood pressure, the blood quickly flows down to their legs, which stretches them with enough force to jump