Biologists have long believed that having a large brain, relative to your body, might go hand-in-hand with being part of a particularly social species.

Biologists have long believed that having a large brain, relative to your body, might go hand-in-hand with being part of a particularly social species.

How the Rule-Breaking Octopus Is Rewriting the Evolution of Intelligence: Cephalopods are loners, but they’re also intelligent