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Table of Contents

Introduction References & Edit History Related Topics

Images

Peringuey's sidewinding adder

Puff adder (Bitis arietans)

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animal. Amphibian. Frog. Anura. Ranidae. Frog in grass.

Abundant Animals: The Most Numerous Organisms in the World

Spider monkey swinging in a tree. (primate, jungle animal)

Why Do Animals Have Tails?

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Collage of different cats. Made for the cat quiz on Mendel

16 Questions About Pets Answered

Slowworm. Anguis fragilis. Blindworm. Lizard. Anguidae. Close-up of a slowworm's head.

7 Questions About Lizards, Snakes, and Other Reptiles Answered

Discover

pg 229Nazi parade features a banner proclaiming, "Death to Marxism."The possibility of a peaceful Germany after World War I was precluded entirely by the terms of the Versailles Treaty and theintransigent hostility of France and England. Stripped of indu

Were the Nazis Socialists?

Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,

Which Religion Is the Oldest?

Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty.

12 Greek Gods and Goddesses

Apollo 12 astronaut Charles "Pete" Conrad stands beside the U.S. flag after is was unfurled on the lunar surface during the first extravehicular activity (EVA-1) Nov. 19, 1969. Footprints made by the crew can be seen in the photograph.

How Many People Have Been to the Moon?

Panoramic view at sunrise of moai, Ahu Tongariki, Easter Island (Rapa Nui), Chile

6 Lost Civilizations

Martin Luther King, Jr.

Why We Celebrate MLK Day

Black widow spider

9 of the World’s Deadliest Spiders

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Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Photos

Peringuey's sidewinding adder

Puff adder (Bitis arietans)

See All Images →

Topics

rhinoceros viper Gaboon viper hognose snake European viper puff adder night adder copperhead black snake asp viper elapid colubrid

Quiz

Lion (panthera leo)

Deadliest Animals Quiz

Mute swan with cygnet. (birds)

Match the Baby Animal to Its Mama Quiz

Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters

Animal Group Names

Lion (panthera leo)

Deadliest Animals Quiz

vulture. An adult bearded vulture at a raptor recovery center. The Gypaetus barbatus also known as the Lammergeier or Lammergeyer, is a bird of prey and considered an Old World vulture.

Animal Factoids

Young chimpanzee dressed in a shirt and sweater vest, scratching his head thinking. (primates)

Wild Words from the Animal Kingdom Vocabulary Quiz

List

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

animal. Amphibian. Frog. Anura. Ranidae. Frog in grass.

Abundant Animals: The Most Numerous Organisms in the World