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spider
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lynx spider
Witness an orb-weaving spider using silk wrappings to immobilize grasshopper prey
spider
Do we really swallow spiders in our sleep?
Red widow spider A medically significant arachnid sheet-web weaver spider
Know how some spiders walk on the surface of the water
spider: trichobothrium Australian funnel-web spider
For Students
spider summary
Quizzes
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
Mute swan with cygnet. (birds)
Match the Baby Animal to Its Mama Quiz
Green tree python snake (Chondropython viridis) in a rainforest.
Creepy Crawlers 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
Read Next
Wasp spider. Argiope bruennichi. Orb-weaver spider. Spiders. Arachnid. Cobweb. Spider web. Spider's web. Spider silk. Black and yellow striped wasp spider spinning a web.
Do We Really Swallow Spiders in Our Sleep?
Black widow spider
9 of the World’s Deadliest Spiders
Discover
Bakers Dozen of Donuts, or Paczki's
Why Is a Baker’s Dozen 13?
Turtle, tortoise, reptile. Uses assets 88582 & 89606
What’s the Difference Between a Turtle and a Tortoise?
American bison (Bison bison) also known as buffalo or plains buffalo on the prairie, western U.S.
What’s the Difference Between Bison and Buffalo?
The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)
New Seven Wonders of the World
Baseball laying in the grass. Homepage blog 2010, arts and entertainment, history and society, sports and games athletics
10 Greatest Baseball Players of All Time
Panoramic view of moai, Ahu Tongariki, Easter Island (Rapa Nui), Chile
8 of the World’s Most-Remote Islands
The field takes the turn one after the restart during the 103rd Indianapolis 500 at Indianapolis Motor Speedway on May 26, 2019 in Indianapolis, Indiana. (auto racing, Indy 500)
Why Is the Indy 500 Held on Memorial Day Weekend?

Internal features

in spider in Form and function
Also known as: Araneae, Araneida
Written by
Herbert W. Levi
Emeritus Professor of Biology, Harvard University; Curator of Arachnology, Museum of Comparative Zoology, 1966–91. Coauthor of A Guide to Spiders and Their Kin; cotranslator and coeditor of Invertebrate...
Herbert W. Levi,
Lorna R. Levi
Coauthor of A Guide to Spiders and Their Kin; cotranslator and coeditor of Invertebrate Zoology by A. Kaestner.
Lorna R. Levi•All
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World's first gene-edited spiders spin red silk • May 12, 2025, 11:52 PM ET (Earth.com)
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