Choosing the right collar and leash combination for a Glen of Imaal Terrier requires consideration of the breed's unique build and temperament. Glens carry substantial muscle on a low, broad frame with a thick neck, which means standard collars must be properly fitted to avoid slipping over the head or sitting too tight against the throat. A flat buckle collar in nylon or leather, measured to allow two fingers between the collar and the neck, serves well for everyday identification and tag display.
For walking, a harness is generally preferable to a collar for this breed. Glens are strong for their size and can pull with surprising force, especially when their terrier instincts are triggered by a squirrel or an interesting scent. A front-clip harness redirects pulling energy toward the handler rather than allowing the dog to brace forward against a collar, reducing strain on both the dog's trachea and the walker's arm. Back-clip harnesses work well for Glens that have already mastered loose-leash walking.
Leash selection should match the Glen's strength and the walking environment. A six-foot fixed-length leash in nylon webbing or leather provides the best combination of control and freedom for urban and suburban walks. Retractable leashes are generally not recommended for terrier breeds because they offer insufficient control when the dog lunges toward a distraction and can encourage pulling behavior by rewarding forward movement with more slack.
For training sessions or environments with heavy distractions, a shorter four-foot traffic leash or a standard leash doubled over provides closer handling. Hands-free leashes that clip to a waist belt are a convenient option for jogging with a Glen, though they should only be used with dogs that have reliable leash manners, as a sudden lunge from a thirty-five-pound terrier can throw a runner off balance.