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Pacu Fish: The Piranha Cousin With Human-like Teeth
animals.howstuffworks.com/fish/pacu-fish.htm
In 2023, 11-year-old Charlie Clinton from Oklahoma made headlines by catching a pacu — a South American fish known for its human-like teeth — in a pond behind his house, far from its native Amazon habitat.
What Is the Butterfly Effect and How Do We Misunderstand It?
science.howstuffworks.com/math-concepts/butterfly-effect.htm
We may think the butterfly effect means that a small change (like the flap of a butterfly's wings) can have huge consequences (a tornado in China). But what if it means the opposite?
Hammerhead Worms Are Toxic and Invasive, But Are They Dangerous?
animals.howstuffworks.com/animal-facts/hammerhead-worms.htm
Hammerhead worms are toxic but not particularly dangerous — unless, of course, you eat too many of them.
What If Mosquitoes Went Extinct?
science.howstuffworks.com/science-vs-myth/what-if/what-if-mosquitoes-went-extinct.htm
Imagine going outside in the summer and not being eaten alive by mosquitoes. Yeah, no mosquitoes! Well, don't celebrate just yet, because a world with no mosquitoes might have a radically different food chain.
Do Horses With Broken Legs Have to Be Shot?
animals.howstuffworks.com/mammals/broken-leg-horse.htm
Horses with broken legs have a hard time recovering because of their active nature. Learn why horses with broken legs are sometimes euthanized.
What makes humans human?
science.howstuffworks.com/life/genetic/humans-human.htm
What makes humans human? How are we different from the other great apes? Find out what makes humans human in this article from HowStuffWorks.
What if people had evolved as birds?
science.howstuffworks.com/science-vs-myth/what-if/what-if-people-had-evolved-as-birds.htm
If people had evolved as birds, we'd probably lay eggs. Learn more about what would happen if people had evolved as birds at HowStuffWorks.
Could You Pass Psychology 101?
play.howstuffworks.com/quiz/could-you-pass-psychology-101
Psychology is the study of our minds and emotions. As humans, we're rather complex beings, and psychology makes some sense of it all. Let's see if you can make some sense of this quiz!
Dodo Birds: Maybe Not Complete Dummies After All
animals.howstuffworks.com/extinct-animals/dodo-birds-maybe-not-complete-dummies-all.htm
The dodo bird is finally getting its reputation repaired, thanks to some new research. Learn more about the dodo at HowStuffWorks Now.
The Yellow Anaconda Can Form Days-long 'Breeding Balls'
animals.howstuffworks.com/snakes/yellow-anaconda.htm
The yellow anaconda isn't the only snake species to form breeding balls for mating privileges, but it will engage in the ritual for several hours or even days.