Experiment shows octopuses feel body ownership, a trait previously seen only in mammals



Summary

A recent study reveals that octopuses possess a sense of body ownership, meaning they can distinguish their own limbs from external objects. Researchers tricked octopuses into retracting a fake, moving arm, suggesting the animals perceived it as part of their body. This is significant because body ownership was previously thought to be unique to mammals. The finding highlights the complex cognitive abilities of octopuses and suggests that this fundamental sense may have evolved independently across different branches of the animal kingdom, potentially driven by the need for complex motor control.

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