PentobarbitalRabbitsGABA ModulatorsHypnotics and SedativesBarbituratesAdjuvants, AnesthesiaAnestheticsChloraloseEuthanasia, AnimalReceptors, GABA-AAnesthesiaXylazineDiazepamKetamineThiopentalIsofluraneHalothaneDose-Response Relationship, DrugUrethaneDogsgamma-Aminobutyric AcidEtherChloral HydrateAnesthetics, GeneralAnesthesia, IntravenousDextroamphetamineChlordiazepoxideSecobarbitalGABA-A Receptor AgonistsColumbidaePregnanedionesReinforcement ScheduleEtomidatePropofolAnesthetics, InhalationPicrotoxinGABA AgonistsEthoxzolamideRats, Inbred StrainsTriazolamPhencyclidineBrainAnesthetics, IntravenousGABA-A Receptor AntagonistsTime FactorsAminobenzoatesAnesthetics, DissociativeRats, Sprague-DawleyMeprobamateHexobarbitalDrug InteractionsSorboseMuscimolCatsDiuretics, OsmoticDiscrimination LearningDextrorphanEnfluraneHypothermia, InducedEthanol