Huddling rats behave as a 'super-organism'

Rodents huddle together when it is cold, they separate when it is warm, and at moderate temperatures they cycle between the warm center and the cold edges of the group. In a new study published in PLOS Computational Biology, Jonathan Glancy, Roderich Gross, Jim Stone and Stuart Wilson from the University of Sheffield found they could simulate huddling by assuming simply that touching individuals in turn brings their temperatures closer to an ideal body temperature. According to the model, these selfish individual behaviours improved the ability of the whole group to regulate its temperature.

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