True-or-false quiz for adults: a full roundup from common-sense questions to surprising trivia!
Did you know that hidden within the things we take for granted in our daily lives—things we casually use without a second thought—are actually some astonishing facts? From the unit used for a computer mouse, to the origin of SOS, to the history behind the tally mark “正” used for counting, everyday items are full of surprising truths.
We’ll introduce adult-friendly life trivia lurking in the everyday, presented in a true-or-false quiz format.
We’ve gathered questions that will make you think, “Wait, really?” as well as trivia you’ll be proud to brag about.
So, how many can you get right?
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Surprising Facts Quiz on the World, Animals, and History (1–10)
In Turin, Italy, you can be fined if you don’t walk your dog at least three times a day.
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In Turin, Italy, the law stipulates—on animal welfare grounds—that pet dogs must be provided a comfortable life by ensuring they get enough exercise. As a result, if you fail to walk your dog at least three times a day, you may be fined. It’s a rule that reflects a culture typical of a leading animal-welfare nation, one that respects pets as members of the family.
In Germany, you need a license to go fishing.
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In Germany, you need a national fishing license to go fishing. To obtain this license, you must take specialized courses and pass examinations. Because fishing is regarded not merely as a leisure activity but as one that requires knowledge and responsibility to protect natural resources, a strict system with penalties is in place.
Horses have four blood types.
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Unlike humans, horses have a very large variety of blood types. Broadly speaking there are eight groups, and when further subdivided, it is said there are more than three trillion types in total. However, unlike humans, blood transfusions do not require matching blood types; transfusions can be performed between any blood types.
Mito Komon’s real name is Tokugawa Ieyasu.
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The person famous as Mito Kōmon was actually Tokugawa Mitsukuni, the grandson of Tokugawa Ieyasu, the first shogun who founded the Edo shogunate. Mitsukuni was the second lord of the Mito domain and became well known for overseeing the compilation of the Great History of Japan (Dai Nihonshi). Although he is fondly known to many as an elderly traveler from television dramas and the like, it is also said that he did not actually go on such journeys.
The smallest country in the world is Monaco.
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The smallest country in the world is not Monaco. In fact, Vatican City is the smallest country. Vatican City has an area of about 0.44 square kilometers, which is smaller than Monaco’s approximately 2 square kilometers.



