A Tibetan Mastiff requires a collar and leash system built for serious strength. Standard nylon collars in large sizes may technically fit around the dog's thick, heavily furred neck, but they tend to ride up, mat the coat, and lack the durability needed for a dog that can weigh well over 100 pounds. Wide, flat collars made from heavy-duty nylon webbing or rolled leather are better options, as they distribute pressure more evenly and are less likely to dig into or tangle the coat.
Harnesses are strongly recommended for walking, especially for owners who do not have the physical strength to counter a sudden lunge from a determined Tibetan Mastiff. A front-clip harness redirects pulling force toward the handler and gives significantly more control than a collar alone. Look for harnesses with padded chest plates and adjustable straps at multiple points, as the Tibetan Mastiff's deep chest and heavy coat require a customizable fit to avoid chafing and slipping.
Leashes should be at least six feet long and made from sturdy materials such as biothane, heavy-duty nylon, or thick leather. Retractable leashes are not appropriate for this breed — they offer insufficient control, can snap under sudden force, and teach the dog that pulling extends their range. A fixed-length leash with a padded handle gives the handler the best combination of control and comfort during walks.
Double-latch or carabiner-style clips are worth seeking out, as standard snap hooks can occasionally open under strain. Some owners of large guardian breeds also use a dual-attachment setup — leash clipped to both the harness and a collar — for an added layer of security in situations where an escape would be dangerous, such as near busy roads or in unfamiliar environments.