title: Corrigendum.
abstract: In the following article--Calvo, G., Holden, E., Reid, J., Scott, E. M., Firth, A., Bell, A., Robertson, S. and Nolan A. M. (2014) Development of a behaviour-based measurement tool with defined intervention level for assessing acute pain in cats. Journal of Small Animal Practice, 55, 622-629-- the copyright information for Appendix 2 was placed incorrectly under Appendix 1.The copyright information for Appendix 2 is: Copyright © 2010 University of Glasgow. Permission granted to reproduce for personal and educational use only.Commercial copying, hiring, lending is prohibited. The authors wish to notify the readership of this error.