Animals & Nature

Why Do Leaves Fall in Autumn?

Why do some plants shed their leaves before winter? It turns out autumnal leaf drop is a form of self-protection. 

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10 Animals With Evolutionary Traits Plucked from a Nightmare

From frogs that give birth through their mouths to crabs with 6-foot long legs, these are some of the strangest animals you'll ever see.

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Editor's Picks

cassowary
Cassowary, (genus Casuarius), any of several species of large flightless birds of the Australo-Papuan region. Cassowaries are the only members of the family Casuariidae and belong to the order Casuariiformes, which also includes the emu. There are three species (counted by some experts as six),
coral
Coral, any of a variety of invertebrate marine organisms of the class Anthozoa (phylum Cnidaria) that are characterized by skeletons—external or internal—of a stonelike, horny, or leathery consistency. The term coral is also applied to the skeletons of those animals, particularly to those of the
How Deadly Are Australia’s Animals?
Australia is notorious for its deadly animals. But how likely are they to actually kill you?
6 Real-Life Man-Eating Animals
Lions and tigers and bears, oh my!
8 Famous Animals
Learn about some celebrity critters.
shoebill
Shoebill, (Balaeniceps rex), large African wading bird, a single species that constitutes the family Balaenicipitidae (order Balaenicipitiformes, Ciconiiformes, or Pelecaniformes). The species is named for its clog-shaped bill, which is an adaptation for catching and holding the large, slippery

Spotlight: Brown Bears

These shaggy-haired bears, native to Europe, Asia, and North America, include species such as the Grizzly and the Kodiak bear, which weighs up to 720kg (1,600 pounds) and is often considered the world's largest carnivore. 

Quizzes

Deadliest Animals Quiz
Do you know which species of shark is most likely to attack a human? Or what animal has the strongest bite?
Name That Flower!
Can you tell the difference between a lilac and a hyacinth?
Fruit or Vegetable? A Quiz
How to be a smarty-pants in the produce aisle.
Moms of the Animal Kingdom Quiz
The mother of all animal quizzes.

Videos

How chameleons change color—and why
How chameleons change color—and why
Encyclopædia Britannica, Inc.

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