Cover legend: Turtles perform a rhythmic limb movement to remove an irritant from the body surface. The neural network that generates this scratch movement is situated in the spinal cord. A study in this issue shows that neurons in the thoracic spinal segments contribute to hindlimb scratching in an ex vivo preparation. This finding demonstrates the distributed origin of the underlying spinal network. For more information, see the article by Guzulaitis et al. (pages 10756–10764). Photograph by Anders V. Petersen.