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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
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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
Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)
All 119 References in “We Didn’t Start the Fire,” Explained
airplane in flight (plane, aircraft, flying)
7 Puzzling Plane Disappearances
Salem Witch Trials. Photogravure after the painting by Walter McEwen titled - The Witches - circa 1890s.
How Rye Bread May Have Caused the Salem Witch Trials
Estimated battle casualties, Normandy invasion, World War II. WWII, D-Day
Estimated Battle Casualties During the Normandy Invasion and Campaign to Liberate Paris (June–August 1944)
illustration of the walking titanosaurus, Patagotitan mayorum
Titanosaurs: 8 of the World's Biggest Dinosaurs
The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.
What If the President Is Impeached?
San Francisco, California/USA-1/18/20: Womens March at Civic Center marching with signs of political protest regarding equality also embracing 2020 presidential candidates and celebrating equality
How Does the U.S. Government Define the Difference Between a Protest and a Riot?
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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,
Joseph Culin
Professor of Entomology, Clemson University, South Carolina.
Joseph Culin•All
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The sex organs (gonads) of male and female spiders are in the abdomen. The eggs are fertilized, as they pass through the oviduct to the outside, with sperm stored in the seminal receptacles after mating. The fertilized egg (zygote) develops in the manner typical of arthropod eggs rich in yolk (see arthropod: Reproductive system and life cycle).

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