Our Classic Framed Diamond, Caution a Trained Protection Dog Lives Here Sign can be attached to the door, wall or window of your home or business. The text and design work on this sign is laser engraved into sturdy plastic. Each sign comes with an adhesive foam backing, allowing it to be attached to any flat surface. Comes in multiple colors. Our Dog and Pet signs are great for your home or business. This sign is great for home security and safety, let would be intruders know that there are protection dogs on the property.