An improved leash device for pets that includes a tongue for insertion into a seat belt is described. The tongue may be designed to fit any vehicle safety belt buckle to allow a user to secure their pet to their vehicle for travel. The user may operate the device by moving a safety belt tongue from inside the housing of the leash device. When the tongue is moved outside the housing, it may be inserted into the buckle attached inside the vehicle to keep the pet safe during vehicle movement. The leash device may also include a retractable leash mechanism with a lock button for alternatively allowing or preventing the extension/retraction of the leash. A button hood may be provided to prevent accidental toggling of the lock button.
