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7 Most Dangerous Spiders in the World

spiders
Photo by jax10289 from Shutterstock

Redback Spider

The redback spider, also known as Latrodectus hasselti, is one of the most dangerous and extremely venomous species of spider that can be found in Australia, Asia, and New Zealand. They are often called “Australian Black Widow” because they look similar to the Black Widow, but they are totally different in terms of behavior and features. 

In general, the female redback is larger than males and their body can measure ten mm in length (0.1 in). They are nocturnal and feed on different insects, other spiders, and small vertebrates. They catch their prey on their web and attack them by injecting a complex venom. 

Unfortunately, their venom can be deadly to humans as well, but complications can be prevented with an antivenom discovered in 1956. 

18 Responses

  1. They left off probably the two most dangerous spiders there are: The Brazilian Wandering Spider (or Banana Spider) and the Funnel Web Spider from Australia. Both can cause death to humans.

  2. Yes, OMG, I am sooooo afraid of sppiders and every night before I go to bed, I check out the ceiling, and every other place in my room that I might think one of those icky things may be hiding!!! I hate them more than anything else, or should I say that I am afraid of spiders more than anything else !

    1. Make sure you plug in a ultrasonic sensor with a blue light. Spiders HATE blue lights. They ABSOLUTELY HATE THEM, and will stay away at the sight of them.

  3. Echoing Marc’s comment, I don’t think there’s a deadlier spider on earth than Australia’s Sydney funnelweb spider. If it is fully loaded with venom when it strikes, it can kill a healthy young adult human within 20 minutes, and there is no antivenin. This one is very aggressive and deadlier than the Brazilian wanderer.

  4. Both the Brazilian wondering banana spider and the funnel spider were mentioned and given their due respect

  5. I have always been under the impression that the male Sydney funnel web was the second most dangerous spider in the world next to the Brazilian wandering spider. Why didn’t the funnel web even make the list?

  6. Even the Wolf Spider can trigger Anaphylaxis, which can be deadly for some. It isn’t necessarily the venom or poison, but the individual’s reaction to the toxin.

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