Body TemperatureBody Temperature RegulationTemperatureCold TemperatureHot TemperatureSkin TemperatureHypothermiaThermometersFeverEnergy MetabolismHibernationTelemetryShiveringLipid MetabolismThermographyCircadian RhythmSciuridaeTime FactorsThermogenesisMetabolismSweatingThermometryHumidityHeat Stress DisordersOxygen ConsumptionSeasonsHypothermia, InducedHeatingGlucoseKineticsBasal MetabolismAntipyreticsImmersionLiverPyrogensMotor ActivityHydrogen-Ion ConcentrationPreoptic AreaCarbon DioxideRectumEatingHypothalamusThermosensingModels, BiologicalIncubators, InfantAdaptation, PhysiologicalHeat StrokeHeart RateBody WeightWaterRats, Sprague-DawleyBehavior, AnimalSleepMolecular Sequence DataBrainStress, PhysiologicalInfrared RaysThermodynamicsThermoreceptorsN-Methyl-3,4-methylenedioxyamphetamineMutationInjections, IntraventricularRespirationAdipose Tissue, BrownTransition TemperatureHyperthermia, InducedCold ClimateThermal ConductivityOxidation-ReductionDose-Response Relationship, DrugWakefulnessRewarmingClothingBeluga WhaleAnalysis of VarianceSpecies SpecificityLizardsCerebral VentriclesClimateEnvironment, ControlledFatty AcidsMytilusEar CanalRats, WistarAcclimatizationDimensional Measurement AccuracyMagnetic Resonance SpectroscopyAlligators and CrocodilesCold-Shock ResponseAirLactic AcidMice, Inbred C57BLLightBiotransformationComb and WattlesEnvironmentEscherichia coliAcetaminophenOxygenPhotoperiod