CONFLICT OF INTEREST STATEMENT The authors declare they have no conflicts of interest. DATA AVAILABILITY STATEMENT Research data are available from the corresponding author upon reasonable request. REFERENCES 1, , , , , , et al. Intervertebral disc disease in dogs. Part 1: a new histological grading scheme for classification of intervertebral disc degeneration in dogs. Vet J. 2013; 195(2): 156–163. 2, , , , , , et al. Intervertebral disc degeneration in the dog.