Floor-slipperiness is a crucial factor in designing buildings for cohabitation with pets. This study proposes an indicator of floor slipperiness applicable to small-breed indoor dogs prone to skidding accidents. The incidence of skidding was recorded by applying load elicited by movements of 12 dogs on 6 flooring materials with different Coefficient of Slip Resistance (CSR). The relationship between recorded incidence and floor materials' CSR revealed that dogs slowed their movements to avoid skidding on low CSR floors. A range of CSR that does not slow dogs' movements was determined and its minimum value is proposed as the required lower limit.
