Ant colonies behave like neural networks when making decisions.

When each individual ant in a group feels hot underneath, it holds on as usual until the entire colony suddenly changes course. “They run out as one,” the scientists say. "It's almost as if they have a large collective intelligence." The data obtained during the experiment indicate that the ants combine sensory information with the parameters of their entire group. So they make one decision for all. This process is similar to neural computing, leading to decision making in the same way.