Body TemperatureBody Temperature RegulationTemperatureMammalsCold TemperatureHot TemperatureSkin TemperatureHypothermiaThermometersFeverHibernationTelemetryShiveringThermographyCircadian RhythmSciuridaeTime FactorsThermogenesisHumiditySeasonsSweatingThermometryHeat Stress DisordersHeatingHypothermia, InducedAntipyreticsOphthalmic SolutionsImmersionPyrogensEnergy MetabolismMotor ActivityPreoptic AreaThermosensingRectumIncubators, InfantBehavior, AnimalMolecular Sequence DataHydrogen-Ion ConcentrationHypothalamusHeat StrokeBasal MetabolismHeart RateMarsupialiaAdaptation, PhysiologicalWaterOxygen ConsumptionSleepSpecies SpecificityLizardsThermoreceptorsThermodynamicsRespirationEatingInfrared RaysThermal ConductivityCold ClimateKineticsN-Methyl-3,4-methylenedioxyamphetamineInjections, IntraventricularClimateTransition TemperatureHyperthermia, InducedAlligators and CrocodilesWakefulnessClothingBeluga WhaleModels, BiologicalStress, PhysiologicalAdipose Tissue, BrownEar CanalRewarmingCerebral VentriclesCarbon DioxideEnvironment, ControlledMytilusDimensional Measurement AccuracyAirAnalysis of VarianceBody WeightPhotoperiodEnvironmentPhylogenyComb and WattlesMutationLightAmino Acid SequenceAcclimatizationWater Loss, InsensibleCalorimetry, Differential ScanningRats, Sprague-DawleyCold-Shock ResponseBody Temperature ChangesBrainReptilesFeeding BehaviorMelatoninSleep, REMEchidnaBathsCattle