10 October 2025
By gathering donated data from practices across the country, NASAN creates a reliable system for measuring national benchmarks in canine, feline, and rabbit spays and castrations. Each year, this valuable data is carefully analysed and made publicly available, giving veterinary practices the opportunity to assess their own performance and compare their outcomes with the national standard.
2024 benchmark report
This report presents data from 72,256 neutering procedures involving dogs, cats, and rabbits, carried out across the UK between 2005 and 2024.
We encourage you to share this report with your team, within your organisation, or on social media to help promote learning and improvement across the profession.
Download the report
PDF document (.pdf)
4347KB
48 pages
Using and citing this report
If you refer to this report or use any of its data, please cite it as:
RCVS Knowledge (2024). National Audit for Small Animal Neutering Report 2023. [Online]. Available at www.rcvsknowledge.org/NASAN-Report/
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International, which means:
- You’re welcome to share it
- You must give appropriate credit
- You may not modify the content
- You may not use it for commercial purposes.
Previous reports
2023 report
This report is made up of data from 63,276 dog, cat, and rabbit neuters across the United Kingdom, performed and submitted from 2005 to 2023.
Using and citing this report
If you refer to this report or use any of its data, please cite it as:
RCVS Knowledge (2024). National Audit for Small Animal Neutering Report 2023. [Online]. Available at www.rcvsknowledge.org/NASAN-Report/
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International, which means:
- You’re welcome to share it
- You must give appropriate credit
- You may not modify the content
- You may not use it for commercial purposes.
2022 report
This report is made up of data from 53,695 dog, cat, and rabbit neuters across the United Kingdom, performed and submitted from 2005 to 2022.
Using and citing this report
If you refer to this report or use any of its data, please cite it as:
RCVS Knowledge. 2022. National Audit for Small Animal Neutering 2022 Benchmark Report. Available at: www.rcvsknowledge.org/NASAN-benchmark-2022/
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International, which means:
- You’re welcome to share it
- You must give appropriate credit
- You may not modify the content
- You may not use it for commercial purposes.
2021 report
This report is made up of data from 45,379 dog, cat, and rabbit neuters across the United Kingdom, performed and submitted from 2005 to 2021.
Using and citing this report
If you refer to this report or use any of its data, please cite it as:
RCVS Knowledge. 2022. National Audit for Small Animal Neutering 2021 Benchmark Report. Available at: www.rcvsknowledge.org/NASAN-benchmark-2021/
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International, which means:
- You’re welcome to share it
- You must give appropriate credit
- You may not modify the content
- You may not use it for commercial purposes.
