What's that tall, dark and furry figure striding ominously through the woods? Is it a bear? A moose? Or something more mysterious? Maybe now is the time to test your Bigfoot/Yeti cred with our 'squatchy' little quiz.
Cryptozoologists are also into other elusive creatures, like the Yeti, Loch Ness monster and chupacabras.
British Columbia school teacher John W. Burns collected the stories from Native Americans on the Chehalis Indian Reserve in the 1920s.
The Coast Salish called the creature "Sokqueatl" or "Ssosq'tal."
Roe said the creature was six feet tall and three feet wide and covered from head to toe with dark brown hair.
Bigfoot enthusiast Dr. Grover Krantz named it Gigantopithecus after a primate that roamed South Asia between 8 million and 150,000 years ago.
With 618 sightings Washington might as well be called the Bigfoot State.
At home in his Himalayan hideout, the Yeti is also called the Abominable Snowman.
While sightings of tall, ape-like creatures had been reported before, the 1958 incident got a great deal of attention because it was widely reported in the news.
No, the Bigfoot in "Harry and the Hendersons" wasn't real; it was played by actor Kevin Peter Hall.
Jack Link's ran the first of these ads in 2006.
Seattle's hairiest cheerleader was named "Squatch."
Hawaii is Bigfoot-free, while Delaware and Rhode Island have the next fewest sightings with just five each.
Just 3.1 percent are Bigfoot believers, while 39.6 percent believe it's "absolutely not" real.
Because of the film, Bob Gimlin is a bit of a celebrity in the Bigfoot researcher community.
"Where is Bigfoot?" is not one of the many Bigfoot-themed shows on television these days.
The Fouke Monster, also known as the Boggy Creek Monster, was the subject of the 1972 semi-factual documentary, "The Legend of Boggy Creek."
Ohio's Grassman is said to be seven feet tall and live in an igloo-like grass hut.
The Himalayas, the highest mountain range in the world, are certainly an excellent hideout for a mysterious creature like the Yeti.
The Sherpa word Yeh-teh means "animal of rocky places."
These days people think of it as basically a white bigfoot, but in Himalayan lore it's actually a dark, gorilla-like creature.
The 1832 account came from Brian Hodgson, a British gentlemen-explorer living in Nepal.
Journalist Henry Newman committed the mistranslation while covering the Everest Reconnaissance Expedition in 1921, but the name stuck.
After Eric Shipton's discover, a number of expeditions were sent to Central Asia to search for the Yeti.
The appropriately named Slick was an oilman from -- where else -- Texas. He also funded expeditions to search for Bigfoot and the Loch Ness Monster.
Bumble was going to eat Rudolph's family before Sam the snowman, Hermey the elf and Yukon Cornelius the prospector intervened. Yikes!
The monastery boasted a Yeti scalp as well as a hand. The scalp turned out to be a serow pelt and the hand was actually human.
After testing much of the supposed evidence, Hillary ultimately called the Yeti a "fairy tale."
In addition to brown bears, rocks and human hermits have also been mistaken for Yeti.
The Yeti is voiced by John Ratzenberger, who famously played Cliff Clavin on the 1980s sitcom "Cheers."
While Nepal's largest bank isn't named after the Yeti, it's largest airline is.