Hibernation of the Thirteen-Lined Ground Squirrel, Citellus tridecemlineatus (Mitchell). II. The General Process of Waking from Hibernation

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Abstract
The thermoelectric method of taking temp. and 2 types of waking from hibernation are illustrated. In disturbed awakening, following removal from the nest, there was successively a gradual straightening from the rolled-up position, increased breathing, raising of the head with much trembling, getting on the legs, opening the eyes (between 20[degree] and 34[degree] C. pouch temp.) and moving forward. In undisturbed awakening produced by gently moving the animal to a warm room, increased respiration was followed by working the head out from under, gradual unrolling of the body, raising of the head-usually without trembling-and opening the eyes, which occurred between 21[degree] and 37[degree] C.