A device mounts to a water bottle and produces sounds when the bottle is chewed by a dog, and includes a cap and squeaker. The cap includes: a body with a first opening on a first side defining an interior surface of a cavity, with a plurality of internal threads; and a second opening on a second side being in fluid communication with the cavity. A plurality of fingers are spaced about the second opening, and extend toward the first side, being at a first angle with respect to an axis of the interior surface. The squeaker is inserted into the second opening, and a protruding region of its housing causes the fingers to deform to a second angle with respect to the axis, after which the plurality of fingers nest between an end flange and the protruding region. Internal threads mount the device to threading of the water bottle.