Body TemperatureBody Temperature RegulationTemperatureCold TemperatureHot TemperatureSkin TemperatureHypothermiaThermometersFeverHeat Stress DisordersHibernationTelemetryShiveringThermographyCircadian RhythmHeat StrokeSciuridaeSweatingHumidityTime FactorsHeatingHeat-Shock ResponseThermogenesisHeat-Shock ProteinsThermometrySeasonsHypothermia, InducedAntipyreticsImmersionHeat ExhaustionThermosensingOphthalmic SolutionsPyrogensHSP70 Heat-Shock ProteinsEnergy MetabolismThermal ConductivityMotor ActivityPreoptic AreaHydrogen-Ion ConcentrationRectumHyperthermia, InducedIncubators, InfantWaterHeart RateStress, PhysiologicalThermodynamicsAdaptation, PhysiologicalThermoreceptorsHypothalamusOxygen ConsumptionBasal MetabolismInfrared RaysBehavior, AnimalKineticsSleepRespirationAcclimatizationClothingEatingTransition TemperatureCold ClimateN-Methyl-3,4-methylenedioxyamphetamineInjections, IntraventricularRewarmingClimateEnvironment, ControlledMolecular Sequence DataEar CanalBeluga WhaleWakefulnessAdipose Tissue, BrownCarbon DioxideMytilusLizardsCerebral VentriclesAirCalorimetry, Differential ScanningWater Loss, InsensibleDimensional Measurement AccuracyAnalysis of VarianceAlligators and CrocodilesComb and WattlesBody WeightRats, Sprague-DawleyLightMutationEnvironmentCold-Shock ResponseModels, BiologicalBody Temperature ChangesEscherichia coliBathsFreezingPhotoperiodSleep, REMDose-Response Relationship, DrugSpecies SpecificityAcetaminophenCalorimetryCattle