For the Japanese Chin, a harness is almost always preferable to a collar for walking purposes. This breed's delicate trachea and short neck make it susceptible to injury from collar pressure, particularly if the dog pulls or lunges unexpectedly on a leash. A well-fitted step-in or vest-style harness distributes force across the chest and shoulders, protecting the Chin's airway and cervical spine while providing secure control during walks.
When selecting a harness, look for adjustable straps that accommodate the Chin's narrow chest and long, flowing coat without matting or tangling the fur. Padded harnesses with smooth interior lining reduce friction against the coat and prevent the irritation that rougher materials can cause over time. The harness should fit snugly enough that the dog cannot back out of it—a common escape maneuver for small breeds—but not so tight that it restricts breathing or shoulder movement.
A lightweight, flat collar can still serve an important purpose as a carrier for identification tags and registration information. Choose a collar no wider than half an inch, made from soft nylon or rolled leather that sits comfortably against the Chin's neck without pressing into the coat. Breakaway collars are a smart choice for indoor wear, as they release under pressure if the collar catches on furniture or other household objects, preventing strangulation accidents.
Leashes for the Japanese Chin should be lightweight and no longer than six feet for standard walks. A thin, flat nylon or leather leash provides adequate control without adding noticeable weight to the harness connection. Retractable leashes are generally discouraged for this breed, as the thin cord can cause injuries and the variable length makes it difficult to maintain consistent control in unpredictable situations such as encounters with larger dogs or street crossings.