The Evil Pig stuffed animal uses brass snaps on its feet to complete the circuit to light the LEDs. The LEDs are connected in series to each other with a resistor and are powered by a 9-volt battery that rests in the belly of the pig. The negative lead to the battery is connected to the back of one of the brass snaps in a leg and the wire from the LEDs extends through the other leg of the pig attached to a brass snap. When the two snaps touch, it completes the circuit and lights the eyes of the pig.