Trixie Dog ID Tube If your dog lost, the one who finds your pet often looks for identification on their collar. Ensuring that your pet is wearing identification at all times will mean that should this horrible event take place, your pet will returned to you safe and sound. This I.D address tube is made from durable metal and can easily be attached to your pets collar. The top of the tube can be unscrewed and place your contact details on a small piece of paper inside.