Spiders are terrible animals that many people are afraid of. Their furry bodies, ugly appearance, and ferocious predation methods are creepy. In particular, a considerable number of spiders contain high venom, and if they are accidentally bitten by spiders, they are light and painful, and heavy will threaten life, so no one will easily rely on an unknown species of spider too close.
So which spiders are the most dangerous around the world? What do they look like? Let's take a look at it.
1. Black Widow Spider
Perhaps the deadliest of the black widow spiders, these smooth black spiders can be found in North America. They leave two clearly visible fang marks after their bite, and the neurotoxins they release can cause a lot of pain. Symptoms of being bitten by them include abdominal and back pain, abdominal muscle spasms, breathing delay, high blood pressure, agitation, and even death.
2. Red-backed spiders
The first deadly spider on the list is the red-backed spider found in Australia. Females are usually black with red and orange-yellow stripes on the back. These spiders possess neurotoxins that can cause muscle weakness, nausea, vomiting and sweating.
3. Funnel web spider
The funnel web spider also originated in Australia. Male funnel web spiders are the real killers. These spiders use their hind limbs to stand when attacking, exposing their fangs. They also possess neurotoxins, and their bites can cause sweating, muscle shaking, saliva production, and tearing.
4. Brazilian stray spider
The Brazilian stray spider is found in the jungles of South America. They are naturally neurotic and aggressive, and they also produce toxic venom. Their bites seem particularly painful because they release serotonin in your blood.
5. Reclusive brown spider
It is a small spider with a violin-like bulge behind its head. The venom of the hermit brown spider can cause ulcers. Although its bite is not painful, its venom can cause you to suffer physical torture.
6. Brazilian roaming spider
The Brazilian roaming spider, or banana spider, has been listed by the Guinness Book of World Records as the most venomous spider in the world. They can release a powerful toxin that can cause nerve loss and difficulty breathing, while also causing men to be in a state of painful erection for long periods of time. Scientists have begun to study how to treat related diseases with this toxin, but until it is successfully used, the toxin is likely to pose a fatal danger. This brown spider is commonly found in South America, with black spots on the abdomen, a body length of 5 cm, and a single leg span of 12-15 cm. This spider's signature move is to raise its two front legs in fear when it is scared. The "roaming" in its name comes from its hunting habits. Instead of using weaving nets to catch prey, it roams around the ground to hunt.
The Sting of the Brazilian Roaming Spider is so poisonous that if the antidote is not obtained in time, the bitten human is likely to die within minutes. Even with anti-snake toxin in rare cases, this sting is fatal. 6 milligrams of venom is enough to kill a 20-gram rat, while the amount of venom stored in the spider's body is at least 60 milligrams.
In addition, scientists discovered in 2007 that a sting from a Brazilian roaming spider can cause long-lasting, very painful erections in men. This venom raises nitric oxide levels, a chemical that promotes blood flow, and some people even consider adding this venom to medications to treat erectile dysfunction.
7. Six-eyed sand spider
The Six-Eyed Sand Spider is one of the most venomous spiders in the world, but fortunately it lives in inaccessible areas and is not aggressive. According to one study, it was found in Africa and South Asia and is related to the hermit brown spider, but its toxicity is many times stronger than that of the hermit brown spider. No antivenom can cure its bite, and in addition to local gangrene, it can also cause diffuse intravascular coagulation, which can cause clots to penetrate the skin and bleed from the seven tricks and bleeding of the skin, and can lead to death. Such warnings should be sufficient.
8. Yellow sac spider
The beautiful yellow-saced spider is one of the least toxic on our list, but it's still very toxic. Yellow-saced spiders can make brushed webs that you can remove with a broom or vacuum cleaner, but fortunately they rarely approach and bite humans. One of the dangers of their bites is closely linked to methicillin-resistant Staphylococcus aureus (MRSA) infection, which is very serious. Although their bites can lead to osteitis or tissue necrosis, their toxicity is still controversial.
9. Brown spider
The brown spider, also known as the recluse spider or violin spider, is shaped like a violin body and is mainly distributed in the prairies of the southern United States, and its close relatives are found in the southwestern desert region of the United States. Brown spiders are about 1 to 5 cm in size (male spiders are generally much smaller than female spiders) and feature 6 pairs of eyes on their heads, unlike ordinary spiders. After being bitten by a brown spider, the wound will have a slight tingling sensation, followed by erythema on the wound and severe pain within 8 hours. A small fluid-filled blister first forms at the wound, which recedes leaving a deep, gradually enlarged ulcer. The symptoms of being bitten by a brown spider are varied, and can be mild fever, a rash, vomiting, and depression and listlessness. In some rare cases, death may result, but the victims are usually small children.
10. Rat spider
Rat spiders are found in Australia. The female rat spider is completely black, while the male mouse spider has a red head and red jaws. Although their names don't sound so vicious, the spider's dangers can be compared to the Sydney funnel web spider. There are not many cases of rat spider bites, probably because rat spiders usually just "dry" bites, i.e. do not release venom. Spiders mostly feed on insects , other spiders , polypods , and some spiders also feed on small animals. Jumping spiders have good eyesight and can dive up close to catch prey within 30 centimeters and swoop down on them. Crab spiders wait for prey on flowers that are similar in color to their body. The ground spiders that burrow in the earth build a silk crypt, and the mouth of the cave has a live cover that opens at night to prey on insects passing through the cave entrance. Funnel spiders weave funnel nets, and insects fall into the nets to cause vibrations; The spider itself resides in a silk tube, with a narrow end that penetrates into a bush or stone crevice.