In an experiment, mice groomed familiar cagemates and removed objects from their mouths. The unconscious mice woke sooner.
Photo: Donald Hobern from Copenhagen, Denmark · CC BY 2.0 · Original
80%of cases: object removed
The story behind it
When a familiar mouse lies unconscious, its cagemate often pulls its tongue out.
A team at the University of Southern California anaesthetised mice and filmed their partners. These groomed them, bit at their mouths, pulled their tongues and removed objects the team had put there. The unconscious mice came round sooner.
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