Spider Facts – 32 Interesting Facts About Spiders

Spiders are arachnids, which also includes scorpions, mites, and ticks. They have a skeleton outside their body, a segmented body and eight jointed legs. Spiders are not insects.

Here we’re going to learn more interesting facts about spiders.

  1. There are around 46,000 known species of spiders in the world.
  2. Spiders are found on each continent except Antarctica.
  3. Spiders are the largest order of arachnids, which ranks them seventh in the diversity of total species among all groups of organisms.
  4. Their bodies are made up of two main parts – the cephalothorax and the abdomen.
  5. An estimated 25 million tons of spiders in the world feed up to 400-800 million tons of prey a year.
  6. The Bagheera kiplingi is the only known vegetarian spider in the world.
  7. A bite from the Brazilian wandering spider can lead to a long and painful erections in human males.
  8. A strand of spider silk is said to be five times stronger than the steel of same weight.
  9. On average, it takes a spider about 60 minutes to build a web, and they usually build a new one at each night.
  10. Spiders do not have antennae, which makes it different from insects.
  11. The existence of spiders are important to a healthy ecosystem of the Earth. As they consume many types of harmful insects, pollinate plants, and recycle dead animals and plants back into the earth. In fact, they are considered to be a food source for many small mammals, birds, and fish.
  12. Spiders have silk-spinning glands called spinnerets, at the back of their abdomen. Each one is act like a small shower-head in which there are hundreds of holes, that produce liquid silk.
  13. The silk is initially a liquid, as long as it does not comes in contact with air, resulting in it becoming stiff.
  14. All spiders spin silk, but not all spiders spin webs.
  15. When the spider moves or walks, it keeps four legs on the surface and the other four legs are up.
  16. The smallest spider in the world is the Patu marplesi, and it can reach a body size of only about 0.37 mm.
  17. The largest spider in the world is the Goliath Bird-Eater Tarantula (Theraphosa blondi) and it is quite large to eat birds. It can reach up to 11 inches wide, and its fangs are up to one inch long. It mostly eats frogs, mice, lizards, young birds and even small snakes.
  18. Some spiders eat their own webs to recycle them.
  19. Not all spiders catch their food in webs. Instead, these spiders may capture the insects by grabbing them and then biting them. Some of these spiders are wolf spiders and the jumping spiders.
  20. The poison of the female black widow is said to be 15 times stronger than the venom of rattlesnake.
  21. Female spiders are usually bigger than male spiders.
  22. Most spiders can live for about one to two years. However, the female tarantula can live for up to 20 years.
  23. Out of more than 40,000 species of spiders have been identified, but less than 12 are considered to be dangerous for humans.
  24. The most deadly spiders in the world are named as black widow, funnel-web, and brown recluse spiders. If a bite from one of these spiders is left untreated, then death could result.
  25. Brazilian wandering Spider or banana spider is known to be the most venomous spider in the world. Even, it can kill people in a matter of hours.
  26. Spiders cannot chew or swallow their food because they do not have teeth. So, they inject poison inside their victims and paralyze them. The poison turns it into liquid and then the spider sucks it up.
  27. Spiders have blue blood, because oxygen is bound to hemocyanin, a molecule that contains copper rather than iron.
  28. Most spiders have either six or eight eyes and are very near sighted. Moreover, they also have tiny hairs on their legs that helps them to hear and smell.
  29. Most of the spiders found in the houses have been adapted to live inside. So, they cannot be survive being outside.
  30. There are about 30 spiders inhabit the average house.
  31. It is believed that a human is never been three feet away from a spider.
  32. Arachnophobia is the fear of the spiders or anything reminiscent of spiders, such as webs or spider-like shapes. It is one of the most common fears among people.
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