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7 Most Dangerous Spiders in the World

spiders
Photo by Ken Griffiths from Shutterstock

Queensland Whistling Tarantula

The Queensland whistling tarantula, also known as Selenocosmia crassipes, is a dangerous species of tarantula that can be found in Queensland, Australia. Their name comes from their ability to make a whistle-like noise when threatened or provoked. Its body length (without legs) can reach up to 9 cm (3.5 in.) and according to animal experts, they are the largest Australian tarantula. 

It seems that their venom is not fatal to humans, but it can cause severe health complications, such as vomiting for up to eight hours. When it comes to the impact of venom on other animals, it can actually kill a large dog breed in less than thirty minutes. Their diet consists of insects, other spiders, geckos, skinks, and frogs. 

According to an Australian researcher who was bitten by a whitling tarantula, “the pain was so intense that sleep that night was impossible. Fifteen hours post-bite, the adjoining finger, and upper hand were also swollen and painful.”

In addition, one of the most important things that you have to consider when it comes to whistling tarantula bites is to seek immediate medical care because the venom can cause severe complications. 

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16 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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