For many years, people in the mountains of North America have reported sightings of a strange being that appears to be very large, very hairy, and very smelly! It walks on two legs like a human, but looks more like an ape. People have nicknamed the creature Bigfoot. On the other side of the world, in the mountains of Asia, a similar creature, called the Yeti, is believed to be out there. Could this half man, half beast be real? If so, what is it? Using the scientific method and other information, this book aims to find out!