Momo (Missouri Monster)

On a July afternoon in 1972, the Harrison children were playing outside their home in Louisiana, Missouri, when they saw something emerge from the woods on Marzolf Hill. A creature, at least seven feet tall and covered entirely in black hair, stood watching them. In its arms it carried a dead dog, matted with blood. The children’s screams brought their mother running—and she saw it too, moments before the thing turned and disappeared back into the trees. The smell lingered for hours: a stench so overpowering that neighbors blocks away reported it. For the next two weeks, the small river town would be gripped by “Momo Mania” as armed posses combed the woods, investigators collected evidence, and the Missouri Monster became a national sensation.

The incident that sparked the Momo phenomenon occurred on the afternoon of July 11, 1972. According to documented accounts, the Harrison family lived near Marzolf Hill on the outskirts of Louisiana, Missouri—a small town of about 4,000 people on the Mississippi River, approximately 80 miles north of St. Louis.

The children’s account: Terry Harrison (age 8) and her brother Wally Harrison (age 5) were playing in their backyard when they spotted something on the hillside above them. At first they thought it might be a person, but as they watched, they realized it was something else entirely—something that stood upright like a man but was covered completely in dark hair. The creature was holding something under its arm. As the children watched in growing terror, they realized it was a dog—a dead dog, or at least a badly injured one, dripping blood. The creature appeared to be watching them. The children screamed and ran for the house.

The mother’s sighting: Doris Harrison heard her children’s screams and rushed outside. She later reported seeing a large, dark figure retreating toward the trees on Marzolf Hill. Before it disappeared into the woods, she caught enough of a glimpse to confirm something large and unusual had been present.

Perhaps the most dramatic element of the encounter was the odor. A terrible stench—described as rotten, putrid, like a combination of sewage and decay—permeated the area. The smell was strong enough that neighbors reported it, and it persisted for hours after the creature departed. Investigators who arrived later could still detect traces of it.

Based on the Harrison sighting and subsequent reports, investigators compiled a consistent description of Momo: Height: Approximately 7 feet tall when standing upright; Build: Massive and powerful, estimated at 300+ pounds; Covering: Entire body covered in long, dark hair, usually described as black; Head: Unusually shaped—witnesses consistently described it as “pumpkin-shaped” or round, sitting directly on the shoulders with no visible neck; Face: Mostly obscured by hair, though some witnesses reported seeing eyes; Arms: Long enough to carry a dog while walking upright; Legs: Thick and powerful; Smell: An overpowering, nauseating odor invariably accompanied sightings. The “pumpkin-head” description was particularly distinctive. Unlike many Bigfoot reports where witnesses describe a more human-like head and facial features, Momo’s head was described as a featureless ball of hair sitting on its shoulders—contributing to the creature’s unsettling, almost nightmarish appearance.

Following the Harrison encounter, Louisiana, Missouri experienced a flap of sightings that would continue for approximately two weeks: July 14: Multiple witnesses reported seeing a large, hairy figure moving through the woods near Marzolf Hill. Strange howls and screams were heard at night; July 15: A farmer reported finding his pigs acting strangely, huddling in the corner of their pen as if terrified. A powerful, foul odor was detected in the area; July 17: Witnesses reported seeing a creature matching Momo’s description crossing a road on the outskirts of town. The sighting was brief but consistent with previous accounts; July 19: Dogs throughout the area were reported barking frantically at night. Several pet disappearances were reported during this period; July 21: The final significant sighting occurred when witnesses reported seeing Momo near the Mississippi River bluffs.

The Louisiana, Missouri sightings attracted both official and unofficial investigators: Local Response: The Pike County Sheriff’s Department took the reports seriously enough to investigate. Deputies responded to calls, interviewed witnesses, and attempted to track the creature: Footprints: Large, three-toed tracks were found in multiple locations. The prints measured approximately 12 inches long and showed what appeared to be claws or nails at the toe tips; Hair samples: Coarse, dark hair samples were collected from vegetation along the creature’s apparent path. Analysis proved inconclusive—the hair didn’t match any known local wildlife but couldn’t be positively identified as coming from an unknown species; Ground disturbance: Investigators documented areas where vegetation had been trampled and brush disturbed consistent with passage of a large animal; Hayden Hewes and the UFO Bureau: One of the most prominent investigators was Hayden Hewes, director of the Oklahoma City-based International UFO Bureau. Despite the organization’s name, Hewes was interested in all manner of unexplained phenomena. Hewes spent several days in Louisiana, interviewing witnesses, collecting samples, and attempting to document the creature. He brought scientific equipment and approached the investigation systematically. While he collected considerable eyewitness testimony and physical evidence, he was unable to produce definitive proof of Momo’s existence. Hewes noted the connection between the Momo sightings and a broader wave of Bigfoot-type reports occurring across the United States during the early 1970s; Armed Posses: Local residents formed armed groups to hunt the creature. Night after night, men with rifles and shotguns patrolled the woods around Marzolf Hill, hoping to catch or kill whatever was terrorizing their community. These hunts were unsuccessful. The creature—if it existed—proved elusive. Some researchers have noted that the heavy human presence may have driven the creature away from the area, explaining the sudden cessation of sightings.

The 1970s Bigfoot Wave: Momo appeared during a period of intense Bigfoot activity across the United States: Context of the era: The Patterson-Gimlin film (1967) had brought Bigfoot into mainstream awareness; Sightings were being reported with increasing frequency nationwide; Media coverage created a feedback loop of reports and interest; The Fouke Monster (Arkansas) had recently made headlines; Multiple “regional Bigfoots” were being documented. Momo fit a pattern emerging across the country—local manifestations of a larger phenomenon, each with distinctive regional characteristics (Momo’s pumpkin-shaped head, for instance, or the Fouke Monster’s aggressive behavior); Some researchers have suggested this wave represented: Increased awareness leading to more reports of genuinely unusual sightings; Mass hysteria fueled by media coverage; An actual increase in sightings due to unknown factors; Or some combination of all these elements.

Various explanations have been proposed for the Momo sightings: Unknown primate: The standard cryptozoological explanation—an unknown species of large ape inhabiting the forests and river bottoms of Missouri; Misidentified bear: Black bears, though not common in eastern Missouri, do occasionally wander into the region. A bear standing upright might be misidentified, though the consistent three-toed footprints argue against this; Hoax: The possibility of deliberate fabrication—someone in a costume, perhaps—has been raised. However, the smell reported by multiple witnesses is difficult to fake, and no hoaxer ever came forward; Escaped exotic animal: An escaped primate from a private collection or zoo might account for some sightings, though no such escape was ever documented; Mass hysteria: Following the initial Harrison sighting and media coverage, subsequent witnesses may have been primed to interpret ambiguous stimuli as Momo encounters; Genuine cryptid: The physical evidence, multiple credible witnesses, and consistency of descriptions suggest—to some researchers—that something unusual was genuinely present in the area.

One of Momo’s most distinctive characteristics was its overwhelming odor. Nearly every sighting included reports of an unbearable stench—described variously as: Rotten garbage; Dead animals; Sewage; Sulfur; “Worse than anything I’ve ever smelled”. This olfactory element is common in Bigfoot reports nationwide. Several theories explain it: Scent glands: The creature may possess musk glands similar to skunks, possibly used for territorial marking or defense; Poor hygiene: A large animal living in the wild might simply accumulate significant body odor; Diet: Eating carrion or fermented vegetation could produce powerful odors; Misidentification: The smell might come from a separate source mistakenly associated with the visual sighting. The smell’s persistence after the creature departed suggests it was not imaginary or suggested—something genuinely odoriferous had been present.

“Momo” was coined by the media as shorthand for “Missouri Monster.” The name stuck, giving the creature a memorable identity that distinguished it from generic Bigfoot reports. Like “Nessie” for the Loch Ness Monster, the nickname helped cement the creature in popular consciousness.

The legacy and aftermath: Immediate aftermath: Media attention faded; Armed patrols were discontinued; Life returned to normal; The Harrison family dealt with ongoing attention and curiosity-seekers; Occasional later reports: Sporadic sightings have been reported in the region over subsequent decades; None have matched the intensity of the 1972 wave; The creature has never been definitively photographed or captured; Cultural impact: Momo remains part of Missouri folklore; The creature has been featured in books, documentaries, and television programs; Louisiana, Missouri acknowledges its unusual claim to fame; Momo is considered a classic case in cryptozoological literature.

Was Momo Real? Arguments for Momo’s reality: Multiple independent witnesses with consistent descriptions; Physical evidence (footprints, hair samples); The smell—difficult to fake or imagine; The children’s genuine terror; Adult corroboration of the sighting; Arguments against: No definitive photographs or specimens; Sightings ceased abruptly; The 1970s wave may have involved social contagion; No subsequent verification of an unknown primate in Missouri. Ultimately, Momo joins a long list of American cryptids that remain officially unproven but persistently reported. The children who saw the creature that July afternoon have grown into adults who maintain their account. The smell that drove neighbors from their yards has faded into memory. But in the woods around Marzolf Hill, in the river bottoms and hollers of Pike County, the question lingers: What walked out of the trees that summer, carrying a dead dog in its arms, and where did it go?

Sources

• Wikipedia search: “Momo (Missouri Monster)”
• Internet Archive — Cryptozoology texts — Digitised cryptozoology literature