Brutus a 200lb English Mastiff and his house mate Titus a West Highland Terrier have just returned from a mile and a half off-leash walk with eight other dogs. When we first met Brutus his owners were nervous about being able to control him on a leash because he is so big and powerful. Now he regularly enjoys both on and off-leash walks. The Sit Means Sit training works with dogs of all sizes and temperaments.