Laboratory mouse aggression survey

The NC3Rs is leading a crowdsourcing data project for UK-based technicians, to identify potential patterns and triggers of aggression in laboratory mice and to explore strategies for its reduction.  

We are inviting animal technicians working within a licensed institute to participate in this study.  

Technicians will be asked to submit routinely collected data, such as; mouse strain, cage type and date of cage change, to investigate potential triggers of aggression. This data will be analysed and used to inform best practice with the aim of minimising incidents of aggressive behaviour in laboratory mice.

Benefit of participating

  • Contribute to better understanding of mouse welfare.
  • Develop skills in data collection and recording of animal behaviour.
  • Opportunity to be acknowledged on any publication produced.
  • Ten hours of IAT CPD credits available.

To register interest in participating in the study, please email   

View our poster on this project (PDF), presented at our annual 3Rs prize award ceremony earlier this year.