HamsFam No Drip Top-fill Water Bottle, Pet Water Dispenser for Medium-sized and Large-sized Rabbit, Guinea Pigs, Chinchillas, Cats and Small Dogs Hang-on bracket snap the hook bracket in one of the top two grooves in the bottle. Hang the bracket over the appropriate cross wire. The screw on bracket may be added for extra security. The water bottle offers top-filling ease with traditional ball-point drinking tip. Features easy lift-off, press-on cap and wide top opening for easy cleaning. Great pet drinking hanging water bottles for your favorite pets.