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7 Most Dangerous Spiders in the World

recluse spiders
Photo by Pong Wira from Shutterstock

Brown Recluse Spider

The brown recluse spider, (Loxosceles reclusa) is one of the most dangerous species of spider that has necrotic venom.  That being said, it seems that their venom won’t kill anyone, except the animals, but it can cause severe complications in humans. So, you should get help if you were been bitten by a brown recluse spider.

Some people who have been bitten by this spider said that they didn’t initially feel the bite and didn’t show symptoms at first, but the necrosis and swelling appear after a few hours. One of the most important things that you have to take into consideration is that not all bites will cause necrosis and not all of them are aggressive. 

An adult brown recluse spider can live for about one to two years and they are able to cannibalize one another if they desperately need food, especially during the mating period. 

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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