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Your search for "vertebrate" returned 150 results
Scary Prehistoric 'Hell Pigs' Once Roamed the Earth
animals.howstuffworks.com/extinct-animals/prehistoric-hell-pigs-once-roamed-earth.htm
These super-frightening entelodonts (aka hell pigs) once patrolled throughout Eurasia, North America and Africa.
When will life on Earth end?
science.howstuffworks.com/life/evolution/life-on-earth-end.htm
Imagine a time in Earth's far-flung past when organisms didn't swim through the oceans or populate the lands. Even the mighty dinosaurs hadn't arisen. Will the planet ever return to that lifeless state?
Goofy-looking Emus Are Leggy, Flightless and Very Friendly
animals.howstuffworks.com/mammals/emu.htm
HowStuffWorks gets to know the emu, the world's second largest bird next to the ostrich.
The Copperhead Snake Is Seldom Lethal But Always Venomous
animals.howstuffworks.com/snakes/copperhead-snakes.htm
Though a copperhead will bite if disturbed, and it is venomous, its bite is rarely fatal.
How Snakes Work
animals.howstuffworks.com/snakes/snake.htm
Snakes are one of the world's most feared animals. Learn how snakes get around, how they kill and eat their prey, and how they court and reproduce.
Why Did the T. Rex Have Such Puny Arms?
animals.howstuffworks.com/dinosaurs/why-did-t-rex-had-such-puny-arms.htm
Tyrannosaurus rex was a giant predator that roamed the earth, so why did it have such tiny arms?
How did language evolve?
science.howstuffworks.com/life/evolution/language-evolve.htm
Let's assume that long ago Homo sapiens communicated by grunting at one another. How and when did all those grunting sounds evolve into a verb tenses, clauses and proper nouns?
Alligator Gar: 100 Million Years Old and Still Kicking
animals.howstuffworks.com/fish/alligator-gar-100-million-years-old-and-still-kicking.htm
The prehistoric looking alligator gar is sometimes referred to as a "living fossil" and, while it may look threatening, it's harmless to anything larger than itself.
If a giraffe's neck only has seven vertebrae, how is it so flexible?
animals.howstuffworks.com/mammals/giraffe-neck.htm
A good portion of a giraffe's height comes from its statuesque neck. But how do these lanky creatures get their necks in such pretzel-like positions?
14 Big Lizards That Outsize Your Cat (and Many Dogs)
animals.howstuffworks.com/reptiles/big-lizards.htm
Whether they're prowling the forest floor or basking in the sun, big lizards are fascinating creatures. They come in all shapes and sizes, with some being land-dwelling behemoths and others being arboreal species that rule the treetops.