Octopuses Learn to Use Mirrors as Tools to Locate Hidden Food, Study Finds
Dartmouth researchers found that octopuses can learn to use mirrors to locate food hidden behind them, achieving a success rate of about 73%. This ability to use mirrors as spatial tools was previously observed only in vertebrates such as mammals and birds. The finding adds to growing evidence of advanced cognitive abilities in cephalopods, an invertebrate lineage evolutionarily distant from vertebrates.
A study conducted by researchers at Dartmouth College found that octopuses can be trained to use mirrors to find food that is not directly visible to them. The animals succeeded in correctly identifying the food's location approximately 73% of the time after training, suggesting they were using the mirror as a functional tool rather than simply reacting to their own reflection. Prior to this research, the ability to use mirrors for spatial reasoning had been documented only in vertebrates, including certain mammals and birds. Octopuses are invertebrates belonging to the cephalopod class, making this finding notable from an evolutionary standpoint, as it suggests complex cognitive traits may have developed independently across very different branches of the animal kingdom. The research contributes to a broader scientific conversation about the nature of animal intelligence and the neural underpinnings of tool use.
What's missing
The article does not clarify whether the octopuses demonstrated mirror self-recognition—a related but distinct cognitive benchmark—or detail the sample size and experimental methodology, which are important for evaluating the study's robustness.
How coverage differed
Only one source was provided, Science Daily, which is generally considered centrist and science-focused. The framing is straightforwardly positive toward the research findings, with no apparent political or ideological slant detected.
What different sources said
- Science DailyCenter
Octopuses use mirrors to find food they cannot see
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