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Your search for "vertebrate" returned 142 results
10 Biggest Sharks in the World
animals.howstuffworks.com/fish/sharks/biggest-sharks-in-world.htm
Sharks: They are the stuff of legend and the stuff of nightmares. But which are the biggest? Here are the top 10.
How Vestigial Organs Work
health.howstuffworks.com/human-body/parts/vestigial-organ.htm
Vestigial organs are like the body's junk drawer. Learn about the body's vestigial organs and how Darwin's idea of common descent might explain them.
Why do humans walk on two legs?
animals.howstuffworks.com/mammals/bipedalism.htm
Bipedalism was one of the first features to develop in our human ancestors. Is bipedalism better than being on all fours? Read more about bipedalism.
How the La Brea Tar Pits Work
science.howstuffworks.com/environmental/earth/archaeology/la-brea-tar-pits.htm
A sculpted mammoth shows visitors to the La Brea Tar Pits what these ancient animals might have looked like, but the pits themselves have looked the same for thousands of years. How did they form, and what discoveries lie beneath the sticky surface?
Where Do Axolotls Live and Why Do They Look So Strange?
animals.howstuffworks.com/endangered-species/axolotl.htm
The axolotl, a critically endangered species, can regenerate virtually any of its limbs or organs and has a face that's totally irresistible.
How do sharks see, smell and hear?
animals.howstuffworks.com/fish/sharks/shark-senses.htm
A shark sense isn't so different from any of our senses, a shark sense is just sharper underwater. See more about shark sense and how each works.
Why Do We Sleep?
science.howstuffworks.com/life/inside-the-mind/human-brain/sleep.htm
Every animal sleeps -- some more than others -- but why they do it is a mystery to scientists. Is sleep more than just beauty rest? Could skimping on it kill you? And how much do you really need?
What Do Pheromones Do to People and Animals?
health.howstuffworks.com/wellness/men/sweating-odor/pheromones.htm
What are pheromones? Visit Discovery Health to learn what pheromones are.
¿Qué tan bien conoces la geografía mexicana?
play.howstuffworks.com/quiz/how-well-do-you-know-mexican-geography-sp
México es el vecino al sur de Estados Unidos, ¿pero qué tan bien conoces este país grande y diverso? ¡Pon a prueba tus conocimientos con este juego de HowStuffWorks!
The Frog Quiz
play.howstuffworks.com/quiz/the-frog-quiz
"It's not easy being green," a famous frog once told the world (in song, no less). But if you paid attention in science class, you shouldn't find this quiz too hard! Good luck!