<b>Aggression, anxiety, and stereotypic behaviour </b>

Female C57BL/6J, BALB/cJ, and DBA/2J mice (n = 21; 7 mice per strain) were housed in mixed-strain trios and given temporary access to a large playpen with their cage mates three times per week. Control mice (n = 21; 7 mice per strain) remained in their home cages. Home cage behaviour (development of stereotypic behaviour over time, aggression following cage-changing) and anxiety tests were used to assess how playpen access impacted welfare.<b>In each dataset:</b>Treatments: C=control, P=playpenStrain: B=balb/c, C=C57Bl/6, D=dbaAnxiety data: OF=open field, EPM=elevated plus mazeStereotypic behaviour data: Activity=duration active (seconds)Day_type: B=baseline, P=playpen, N=no playpenAggression data: A=anogenital investigation, D=displacement, P=pinning/boxing, G=rough grooming, C=chasing, F=fighting, M=mounting<br>