Abstract: The automatic feeder is for dispensing dry pet food. It has a generally rectangular housing having three downwardly sloping platforms located one over another in a zig zag manner. The platforms separate the interior of the housing into a top storage chamber, a middle chamber and a bottom chamber. The bottom chamber has a side dispensing opening. Food pellets in the top storage chamber slide from the top platform onto the middle platform in the middle chamber. The middle platform has a vibration means mounted thereto. The vibration means is actuated for a predetermined time interval to cause an amount of food pellets to transfer from the middle platform into the bottom chamber. The dispensing opening is provided with a vertical pivotal swingable trap door which is normally resting in a closed position due to gravity, but is held tightly shut by a latching device which is actuated for the same time interval while the vibration means is actuated.