Effects of group size and cage enrichment on social behaviour and skin injuries of breeding rabbits housed part-time in group

•Aggressive behaviour among does may lead to injuries when housed in group.•One day after grouping, the incidence of doe and kit injuries was high.•Lower doe injury scores were found in groups of three compared with four does.•Platforms as enrichment were often used by does, and plastic pipes were not.•Submission was the most common agonistic behaviour by does.