Body TemperatureHypothermia, InducedHypothermiaBody Temperature RegulationTemperatureCold TemperatureHot TemperatureRewarmingSkin TemperatureFeverThermometersShiveringHibernationTelemetryHypoxia-Ischemia, BrainThermographyHeart ArrestCircadian RhythmTime FactorsHeatingSciuridaeThermogenesisSweatingCirculatory Arrest, Deep Hypothermia InducedHumiditySeasonsImmersionThermometryHeat Stress DisordersMotor ActivityHyperthermia, InducedAntipyreticsEnergy MetabolismOphthalmic SolutionsPreoptic AreaRectumInjections, IntraventricularBrainHeart RateRats, Sprague-DawleyOxygen ConsumptionBehavior, AnimalAsphyxia NeonatorumPyrogensThermosensingHypothalamusHydrogen-Ion ConcentrationCardiopulmonary ResuscitationCerebral VentriclesN-Methyl-3,4-methylenedioxyamphetamineBasal MetabolismIncubators, InfantBrain IschemiaHeat StrokeCarbon DioxideWaterRespirationSleepAdipose Tissue, BrownAdaptation, PhysiologicalAnalysis of VarianceDisease Models, AnimalEatingComaRats, WistarThermoreceptorsBrain InjuriesThermodynamicsInfrared RaysCold-Shock ResponseExtracorporeal CirculationDose-Response Relationship, DrugTransition TemperatureStress, PhysiologicalKineticsThermal ConductivityCold ClimateCardiopulmonary BypassHeart Arrest, InducedAsphyxiaClothingTreatment OutcomeBeluga WhaleWakefulnessBody WeightEar CanalTympanic MembraneClimateAnesthesiaElectroencephalographyLizardsAcclimatizationSwineEnvironment, ControlledMytilusDimensional Measurement AccuracyAirAlligators and CrocodilesAcetaminophenComb and Wattles