Social BehaviorMice, KnockoutBehavior, AnimalMice, Inbred C57BLSocial Behavior DisordersReceptor, Muscarinic M4Receptor, Muscarinic M2Receptor, Serotonin, 5-HT1BExploratory BehaviorSocial SupportSexual Behavior, AnimalReceptor, Adenosine A2AMotor ActivitySocial EnvironmentSocial IsolationReceptors, LDLReceptor, Muscarinic M5Receptor, Muscarinic M3Social DominanceFeeding BehaviorReceptor, Adenosine A1Pair BondAggressionReceptors, Opioid, muDisease Models, AnimalReceptors, Dopamine D2Social PerceptionGene Knockout TechniquesGroomingReceptor, Bradykinin B2Stereotyped BehaviorBrainMaze LearningReceptors, VasopressinReceptors, Dopamine D1Agonistic BehaviorAnalysis of VarianceMaternal BehaviorOxotremorineAutistic DisorderOxytocinReceptors, Dopamine D5Hierarchy, SocialArvicolinaeAnxietyStarlingsSex CharacteristicsReceptor, Bradykinin B1Receptors, Dopamine D3Social AdjustmentReceptor, Serotonin, 5-HT1ABehaviorEchiumAdenosine A1 Receptor AntagonistsDose-Response Relationship, DrugReceptors, MuscarinicPlay and PlaythingsTime FactorsMuscarinic AntagonistsReceptor, Adenosine A2BSwimmingReceptors, BradykininSocial ClassReceptors, Neurokinin-1Health BehaviorSignal TransductionPhenotypeRewardBeesReceptors, SerotoninReceptor, Cannabinoid, CB1Stress, PsychologicalDominance-SubordinationNesting BehaviorAtherosclerosisMice, TransgenicReceptors, GlucagonVocalization, AnimalReceptors, Opioid, deltaCentral Nervous System SensitizationBody WeightDopamineMuscarinic AgonistsInterpersonal RelationsNeuronsConditioning, OperantMorphineModels, AnimalAmygdalaBehavior TherapyRNA, MessengerAnimal CommunicationGenotypeHindlimb SuspensionChild BehaviorReceptors, OxytocinSocial MediaReceptors, Opioid, kappaGene Expression RegulationReceptors, Somatotropin