Abstract: A food dispenser for dispensing dry food, the food dispenser comprising: a food receiving module for receiving the food; a metering module for metering a quantity of the food to dispense, the metering module including an impeller having at least one arm defining a vane, the impeller being rotatably mounted in the metering module, the metering module also including a power drive unit operatively coupled to the impeller for selectively rotating the impeller; a discharge module operatively coupled to the output port for receiving the food from the output port and dispensing the food; an impeller rotation detector operatively coupled to the impeller for detecting a rotation of the impeller when the power drive unit is used to rotate the impeller. The metering module is configured and sized to discharge a predetermined quantity of the food when the impeller rotates over a predetermined rotation angle.