MedetomidineXylazineAdrenergic alpha-AgonistsZolazepamTiletamineHypnotics and SedativesAnesthetics, CombinedAdrenergic alpha-2 Receptor AgonistsAnesthetics, DissociativeButorphanolGuaifenesinImidazolesKetamineMethotrimeprazineAcepromazineSurgery, VeterinaryVeterinary DrugsRespiratory RateMidazolamImmobilizationDexmedetomidineAnestheticsAnesthesia Recovery PeriodReceptors, Biogenic AmineReceptors, Adrenergic, alpha-2Cardiovascular SystemAdrenergic alpha-AntagonistsAnesthesiaDogsFentanylShrewsDose-Response Relationship, DrugInjections, IntramuscularHeart Rate