The gathered section of longer hair on top of a dog's head, typically secured with a band, bow, or clip to keep it out of the dog's eyes. Common in breeds with long head hair such as Yorkshire Terriers, Shih Tzus, Maltese, and Lhasa Apsos, the top knot serves both a functional and decorative purpose.
Maintaining a proper top knot prevents hair from falling across the dog's eyes, which can cause chronic eye irritation, tear staining, and even vision obstruction. In show dogs, the top knot is a highly specific element of breed presentation that judges evaluate.
Always use coated latex bands designed for dogs — human rubber bands or tight elastic can break the hair and cause bald patches over time. Replace the band at every groom to prevent hair tangling around the elastic.