Set of 3 Animal LED Keychain with Sound's...Duck, Pig & Cow Set of 3 Animal LED Keychain with Sound's...Duck, Pig & Cow. These Farm Animal keyrings are not only cute, but functional. They quack, oink, & moo when you press the button on its side or head! The animal's shine a LEDfrom either its eyes, mouth, or nose, when button pressed. Makes for great gift giving!!