At a glancePenning moves sheep into the designated pen under the course’s handling rules.WORKING DOG reference library · Added 2026-10-19 · Editorial guideWatch the entranceThe position of sheep relative to the opening and the dog is more informative than counting attempts alone. Spectators should keep well clear of the working line.Record the event contextA free-standing pen and a yard obstacle are not automatically equivalent exercises. Keep the course description with any instructional or historical example.Using this referenceUse this explanation to understand the term in context. For an entry decision or disputed result, check the current rules and the original event documentation; a glossary cannot replace the authority’s decision.Separate attempt and completionSheep entering a pen opening is not always the same as the official exercise being completed. Closing requirements, handler movement and time limits depend on the rules. Preserve the judge’s recorded result and avoid announcing a completed pen solely because a social-media clip ends with sheep near the gate.Sources & further readingReferences for this guide. Rules and services can change; check the responsible organisation for current details.International Sheep Dog Society — current trial rules (opens in a new tab)Keep exploringYard work: dogs around pens, races and gateways ↗Watching a working dog trial respectfully ↗Explore the working dog communityRecorded competition results · Find a trainer · Browse services · Dogs & litters