Daily True or False
October 13, 2026
10 true or false questions from this day's daily challenge. Click each one to reveal the answer and explanation.
1.Saltwater crocodile is the largest reptile that ever lived on Earth.
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Easy
Saltwater crocodile is the largest reptile that ever lived on Earth.
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Many prehistoric reptiles, such as Sarcosuchus and dinosaurs, were far larger. Saltwater crocodile is the largest living reptile, but not of all time.
2.Saltwater crocodile is the only crocodile species that can live in saltwater.
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Medium
Saltwater crocodile is the only crocodile species that can live in saltwater.
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Several crocodile species, including the American crocodile and Nile crocodile, also tolerate saltwater. Saltwater crocodile is not unique in this ability.
3.Hammerhead sharks use their heads to pin stingrays against the seafloor before eating them.
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Hard
Hammerhead sharks use their heads to pin stingrays against the seafloor before eating them.
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Hammerhead sharks have a wide cephalofoil that they use to pin stingrays down, immobilizing them. This is a documented hunting technique observed in several species.
4.Michelangelo was a close friend of Leonardo da Vinci.
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Medium
Michelangelo was a close friend of Leonardo da Vinci.
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Michelangelo and Leonardo were intense rivals, not friends. They openly criticized each other's work and had a famously strained relationship.
5.Marina Abramović was a professor of performance art at Yale University for 15 years.
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Medium
Marina Abramović was a professor of performance art at Yale University for 15 years.
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Abramović taught performance art for many years at the University of Fine Arts Hamburg, not at Yale. She has never held a professorship at Yale University.
6.Gustave Courbet's painting 'The Origin of the World' was not publicly exhibited until 1995.
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Hard
Gustave Courbet's painting 'The Origin of the World' was not publicly exhibited until 1995.
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This explicit realist painting of a female nude was privately owned for over a century and first shown to the public at the Musée d'Orsay in 1995.
7.Catalpa caterpillars are a popular live bait for freshwater fishing.
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Easy
Catalpa caterpillars are a popular live bait for freshwater fishing.
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Catalpa sphinx moth caterpillars feed on leaves and are prized by anglers as tough, wiggly bait for catfish and panfish.
8.Hammerhead sharks are the most dangerous shark species to humans.
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Easy
Hammerhead sharks are the most dangerous shark species to humans.
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Hammerhead sharks are not among the most dangerous; they rarely attack humans. Species like the great white, tiger, and bull sharks are responsible for far more bites.
9.John Cabot's real name was Giovanni Caboto, an Italian explorer sailing for England.
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Medium
John Cabot's real name was Giovanni Caboto, an Italian explorer sailing for England.
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He was born Giovanni Caboto in Genoa or Venice and later anglicized his name when serving under King Henry VII of England.
10.Stick insects use camouflage to avoid predators.
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Easy
Stick insects use camouflage to avoid predators.
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Their bodies mimic twigs or leaves, a primary defense mechanism to avoid detection by predators.
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