Tracking Sea Monsters, Bigfoot, and Other Legendary Beasts (Unexplained Phenomena)

Do giant hairy beasts roam the forests of the Northwestern United States and Canada? Does a monstrous dog-like creature suck the blood of unsuspecting animals in Mexico and Latin America? Examine the evidence and decide for yourself whether Bigfoot, Chupacabra, and some other bizarre and mysterious creatures may actually exist.