You're probably wondering how Archie McPhee got the actual Bigfoot to make sounds for our Emergency Bigfoot noisemaker.Let's just say we bribed him with pizza and an IPA.This 3 1/2" (8.9 cm) electronic Emergency Bigfoot noisemaker includes four sounds: howl, snort, roar and groan.You know, all the noises Bigfoot is known for.Plastic.Three LR44 batteries included.