Behaviours such as weaving, box-walking and wind-sucking have traditionally been regarded as undesirable behaviours or ‘vices’ by horse owners, which has led to ‘treatment’ regimes that aimed to physically prevent the performance of the behaviour rather than understand the underlying causes for it. In recent years, however, a number of studies have shed light on the epidemiology of these behaviours (e.g. Luescher et al 1998), leading to the development of more welfare compatible treatment options. In this study, a clinical population of horses presented with stereotypical behaviours is examined for relationships between presenting signs and historical and observational findings.