Spiders are one of the five traditional Chinese poisons. We rarely encounter poisonous spiders in our daily lives, but that doesn't mean they're not scary.
Today, let's take stock of some of the world's strongest poisonous spiders.
1, Brazil roaming spider: also known as banana spider, it is the world's most poisonous spider, by the Guinness Book of World Records. This spider is aggressive. Its venom has a potent neurotoxin that can cause loss of nerve control, difficulty breathing and severe pain and even suffocation and death. It only needed to inject 6 micrograms of venom to kill a 20-gram rat, and the total weight of its venom reached 1.069 milligrams.
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2, black widow: many people have heard that not only is it poisonous, but it also eats its spouse after mating. Its bite can cause a symptom called "poisoning of the poisonous spider," and its toxin sometimes causes temporary spinal paralysis or cerebral palsy, but rarely dies. Before the advent of antivenom, its toxins only needed 0.002 mg/kg to kill a person, which meant that it did not need much venom to complete the hunt.
3, Chinese bird-catching spider: Chinese bird spider is very large, belongs to the large spider, just the foot extension can reach 20cm length, and very aggressive, there has been a case of children being bitten to death.
4, six-eyed sand spider: the world's other most poisonous spider, but found in South America and Africa. Compared to other members of the spider family, the six-eyed sand spider is special, it does not track prey, does not weave webs, it lives in inaccessible places and is not aggressive. And it is one of the most toxic spiders in the world, even if it is magnified to the entire animal kingdom, its toxicity can still be among the best. Its venom causes the skin and the seven tricks to bleed, eventually leading to death. In addition, the endurance of the six-eyed sand spider is also amazing, even if it does not eat or drink, it can survive for a year.
5, reclusive brown spider: a poisonous spider distributed in the United States, very small, spread legs is only about 2.5 cm. This poisonous spider often appears in human houses, and once bitten by it, the most dangerous symptom is bone gangrene, where tissue necrosis occurs at the location of the bite, and the wound will ulcerate. 14% of people who develop this symptom are systemic, which means that the bite can lead to a systemic infection.