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How can two seemingly unrelated species that live in isolation from each other evolve into identical forms?

science.howstuffworks.com/life/evolution/parallel-evolution.htm

Parallel evolution leads two seemingly unrelated species living in isolation from each other to evolve into identical forms. How? Learn about parallel evolution.

El Chupacabra: Legend, Sightings & Facts

science.howstuffworks.com/science-vs-myth/strange-creatures/chupacabra.htm

The Chupacabra is a vampire-like creature that has been gaining notoriety. Learn about the legend of El Chupacabra and Chupacabra incidents and sightings.

How Tiger Sharks Work

animals.howstuffworks.com/fish/sharks/tiger-shark.htm

Tiger sharks are named for the dark spots and stripes that mark juveniles. Learn how tiger sharks are equally as ferocious as tigers.

Kaprosuchus Was a Giant, Dinosaur-eating 'Boar Croc'

animals.howstuffworks.com/dinosaurs/kaprosuchus.htm

Travel back about 95 million years ago to the Late Cretaceous period, and you might just find a "boar crocodile" called the kaprosuchus.

Troubled Hedgehogs Fare Better in Urban Environments

animals.howstuffworks.com/mammals/hedgehogs-rural-urban-environments.htm

How have hedgehogs adapted to human environments? Learn more about urban hedgehogs in this HowStuffWorks Now article.

This Rare Giraffe Is Losing More of Its Color Every Year

animals.howstuffworks.com/mammals/rare-giraffe-fading-color-vitiligo-skin.htm

The first case of vitiligo observed in a giraffe. Learn more about this color-fading vitiligo giraffe in this HowStuffWorks Now article.

The Golgi Apparatus Acts Like a Mail Room for Eukaryotic Cells

health.howstuffworks.com/human-body/parts/golgi-apparatus.htm

The Golgi apparatus is the mail room of the cell, packaging up proteins from the endoplasmic reticulum and sending them to their final destinations.

Black Demon Shark: Baja California's Aquatic Cryptic

science.howstuffworks.com/science-vs-myth/strange-creatures/black-demon-shark.htm

In the dark waters off the Baja California Peninsula, whispers of a massive, shadowy predator have given rise to the legend of the black demon shark. Known locally as El Demonio Negro, this alleged predatory shark has sparked both fear and fascination among local fishermen, ocean lovers and shark enthusiasts.

Wolf Image Gallery

animals.howstuffworks.com/mammals/wolf-pictures.htm

Wolves may be a close relative of man's best friend, but we wouldn't recommend trying to befriend these wild canines. Check out these wolf pictures.

Squirrels Are Hardwired to 'Dance' When a Car's Coming

animals.howstuffworks.com/mammals/squirrels-are-hardwired-to-dance-when-cars-coming.htm

Why do squirrels exhibit behavior that can get them killed by cars? And how can you avoid them? Find out at the answers at HowStuffWorks.

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