The Scientist Who Tried to Prove Bigfoot Real

There's something pretty fascinating that surfaced recently from the Smithsonian's podcast, Sidedoor, and it's got a lot of people talking in the research community. It's a deep dive into the life of Grover Krantz, a physical anthropologist from Washington State University who became the first scientist to seriously stake his academic reputation on proving Bigfoot is real. For those unfamiliar with Krantz, he was no fringe hobbyist. He had tenure, published in respected academic journals, and studied things like primate communication and early human hunting patterns. He was the real deal. But in 1970, everything changed when he got his hands on some plaster casts from Bossburg, Washington. One of the prints had what looked like a clubfoot deformity, and Krantz noticed something that hooked him immediately—dermal ridges. Those are basically fingerprints, but on the feet. The anatomical detail was so precise that Krantz believed only someone with expert-level knowledge of anatomy could have faked them. He even sent the casts to the FBI and Scotland Yard's fingerprint experts, and reportedly, Scotland Yard found them credible too. Krantz went all in. He spent years collecting footprint evidence, interviewing witnesses, and building a scientific case. His theory? That Bigfoot was a descendant of Gigantopithecus, an ancient massive ape from Asia that may have crossed the Bering land bridge during the last ice age when sea levels were low. He estimated these beings stood between 6 and 8 feet tall and weighed anywhere from 500 to 800 pounds. Not a small creature by any stretch. One of the more compelling moments in the piece comes from a firsthand account shared by John Mionczynski, a wildlife biologist who had a nighttime encounter while camping in a remote area. He woke up to something breathing nearby, close enough to cast a shadow in the moonlight. Whatever it was, it was massive. Stories like his are exactly the kind of witness testimony Krantz spent years collecting. What makes this particular piece so interesting is the Smithsonian connection. Krantz donated his skeleton to the museum after his passing, and it's now on display alongside one of his beloved Irish Wolfhounds, posed together based on an old photograph. The man literally gave his body to science, and now his remains sit in one of the most prestigious institutions in the world. There's a certain poetry to that, especially for someone who spent decades trying to legitimize the study of a creature most of his colleagues dismissed. The podcast also touches on Krantz's family connection to journalist Laura Krantz, who hosts the podcast "Wild Thing" and spent a decade exploring her distant cousin's work and the broader culture around Sasquatch research. She even mentions that Bigfoot sightings have been reported in every U.S. state except Hawaii, with the joke being that Bigfoot apparently can't swim that far. For anyone interested in the scientific side of Sasquatch research, or just curious about one of the most unusual figures in the field, this is absolutely worth the listen. Krantz was a character—brilliant, eccentric, and unapologetically committed to following the evidence wherever it led, even if it meant driving around the Pacific Northwest with a spotlight and a rifle. The academic world never quite knew what to do with him, but his contributions to the body of research can't be ignored. Check it out when you get a chance. It's a reminder that serious people have been taking this subject seriously for a long time, and that the conversation is far from over.