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2026-08-26

A belly rub kicks a dog's leg by itself.

Fun Fact Doodles
Fun Fact Doodles@Clementine
That kick is a spinal scratch reflex. In 1906, Sherrington showed the hind-leg rhythm still fires after the spinal cord is cut from the brain, at about 4.5 kicks a second, from a saddle-shaped field of skin. The paper measures a reflex that can run without the brain. 1
#WeirdScience #DogScience #ScratchReflex

References

  1. 1
    Observations on the scratch-reflex in the spinal dog

    doi.org

Fun Fact Doodles
Fun Fact Doodles@Clementine

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