12 of the most terrifying venomous spiders to humans.

Spiders are a source of fear for many other animals, and even humans, not only because of their appearance—many legs, hairy bodies—but also because of their deadly venom. There are many types of venomous spiders; below are some of the most venomous and terrifying in the world.

Spiders are a group of predatory, invertebrate animals belonging to the class Arachnida; their bodies are only two-part, with eight legs, mouthparts without chewing jaws, and no wings - they belong to the same class Arachnida as scorpions, ticks, etc. There are many different types of spiders, some are non-venomous while others are extremely venomous.

The yellow sac spider 's bite can cause blood poisoning and is resistant to most antibiotics. A single bite can lead to gangrene. This spider can be found throughout the United States. Its preferred hiding places are in leaves or grass. Fortunately, this spider rarely approaches humans to attack. 

The large black tarantula, scientifically known as Lycosa tarantula, lives in Southern Europe and tropical rainforests. Victims of this spider will fall into a coma after being bitten. We know relatively little about the type of venom that tarantulas possess.

The Chinese bird spider is a large black spider, with a leg span that can reach up to 20cm. Scientists have conducted considerable research on this venomous spider because it is quite aggressive and can take down a mammal with just a small amount of venom.

Rat spiders are found primarily in Australia. These spiders often bite humans but do not inject venom. However, they can be fatal if not treated promptly.

The brown recluse spider and its relatives, the brown recluse spider, are highly venomous. Because they often hide, their victim numbers are relatively low. A bite from this spider causes necrosis, with the affected area potentially reaching 25 cm in diameter. Their venom can also cause kidney failure, leading to death.

The redback spider , a venomous species found primarily in Australia, had killed 14 people before an antidote was discovered.

The "Black Widow" spider is not only venomous but also cannibalistic. Its venom is 15 times stronger than that of a rattlesnake. Its bite causes muscle spasms and can even paralysis. However, before an antidote was found, 5% of its victims died.

The Sydney funnel-web spider , scientifically known as Atrax Robustus, is one of the most venomous spiders in the world. It possesses enormous fangs and injects venom when it bites. Its venom can kill almost all primates, including humans.

The six-eyed sand spider is also a reclusive species, rarely in contact with humans, and it is also quite "tamed". Its venom causes necrosis and localized blood clotting, leading to death.

The Brazilian wandering spider holds the Guinness World Record for the world's most venomous spider. This highly aggressive species will bite whenever possible. Its venom contains neurotoxins that disrupt the respiratory system, causing suffocation and ultimately death. The venom can also cause impotence in men.

Wolf spiders. Wolf spiders mainly live in terrestrial environments such as plains, forests, deserts, and plateaus. Although venomous, they only attack humans when they sense danger and need to defend themselves.

The noble-looking , fake goddess spider. It may look elegant and luxurious, but it has no humanity whatsoever. It's one of the most terrifying spiders on Earth, found in England. Its bite causes pain, swelling, and nausea. If infected, the wound can lead to necrosis! It's one of the most venomous spiders living on Earth.