MedetomidineAnesthesiaAnesthesia, GeneralXylazineAnesthesia, LocalAdrenergic alpha-AgonistsAnesthetics, CombinedZolazepamTiletamineAnesthesia, IntravenousAnesthesia, EpiduralAnesthesia, SpinalHypnotics and SedativesAnesthesia, InhalationAnesthesia, ConductionAnesthesia Recovery PeriodAnesthetics, DissociativeKetamineAnesthesia, ObstetricalAdrenergic alpha-2 Receptor AgonistsGuaifenesinButorphanolAnestheticsAnesthetics, IntravenousPropofolAcepromazineAnesthesia, DentalImidazolesMethotrimeprazineSurgery, VeterinaryIsofluraneFentanylMidazolamVeterinary DrugsAnesthetics, InhalationRespiratory RateAdjuvants, AnesthesiaDexmedetomidineMethyl EthersAnesthesiologyAnesthetics, LocalImmobilizationCardiovascular SystemDogsMonitoring, IntraoperativeNitrous OxideHeart RateReceptors, Adrenergic, alpha-2Adrenergic alpha-AntagonistsReceptors, Biogenic AmineDose-Response Relationship, DrugHalothaneLidocaineRespirationAnesthesia, Closed-CircuitEpinephrineBody TemperatureRandom AllocationAnesthetics, GeneralShrewsInjections, IntramuscularBupivacaineBlood PressurePreanesthetic MedicationAmbulatory Surgical ProceduresNerve BlockThiopentalAnesthesia, CaudalReceptors, Adrenergic, alphaNorepinephrineHemodynamicsBlood Gas Analysis