Size reference: Dogs below 20KG (e.g. Beagles, Whippets, Shihtzus etc.) are suited to small. Dogs between 20KG-30KG(e.g. Border Collies, Australian Shepherds, Retrievers etc.) are suited to bowl in medium or large. Dogs above 30KG are suited for large.
These measurements are just for reference, please get in touch with us with any questions!