oa Madoqua - Aspects of renal physiology, nutrition and thermoregulation in the ground squirrel Xerus inauris
The ground squirrel possesses very efficient kidney function which is reflected in a high urine:pIasma concentration ratio, particularly during the summer months, and one of the highest relative medullary thicknesses recorded in mammals. The diet of these animals changes markedly from the wet to the dry season, as does the incidence of internal parasites. The flared, erect tail is used inter alia as a unique shading device as part of this species' compIex thermoregulatory behavioural repertoire.
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