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Scientists have discovered that octopuses don’t have a dominant arm, but they more often use their front arms for tasks. A study published Thursday in Scientific Reports analyzed videos of octopus movements in the wild. The three species of octopuses studied use their front arms about 60% of the time. The back arms are more often used for movement. The study is the first large analysis of octopus limb actions in the wild. Octopus limbs are complex, with each arm containing 100 to 200 sensory suckers, acting like a human’s nose, lips, and tongue.
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