Petface Toyz Triple Knot Tug Rope. The Petface Toyz Triple Knot Tug Rope offers a large rope toy that is strong and durable and easy for your dog to enjoy. The Petface Toyz Triple Knot Tug Rope features a multi colour design and will keep your dog entertained for for hours on end* Pets should be supervised whilst playing with toys. Although Petface toys have been designed to be strong they are not indestructible and will be susceptible to chew damage. The life of a Petface toy depends on the ability and strength of your pet. Monitor for wear and replace if damaged*