It is estimated that more than 46,000 species of spiders survive worldwide today, with their eight legs stretching to every continent and country except Antarctica.
These species of spiders come in all shapes and sizes, and a small group of the most venomous spiders can be extremely dangerous for humans, perhaps a bite that can prompt death, but most spiders are either too small to pierce human skin or aggressive enough to try. And some spiders, while it is true that they may cause casualties to humans, because most clinics and hospitals now have species-specific antivenoms (antitoxins) to properly treat potentially harmful spider bites, this does not mean that these spiders are not scary.
Yellow sac spider
Yellow sac spider
The yellow sac spider is a spider commonly found in North America, Europe, and Australia. Their bodies are usually yellow or grey-yellow and are small, measuring about 6-10 mm in length.
Yellow-sac spiders prefer to live under fallen leaves, stones, and sheets; and structures under window sills and siding, and the edges of walls and roofs within the house. The retreat of the yellow sac spider may be exterior or interior under the object towards the sides of the walls and roof.
These retreats are luxurious cylinders or sacs where spiders hide during the day. In houses with light-colored, colorless walls and roofs, their ashrams may go unnoticed because they are small and mixed with the shadows of the foundation.
Their venom can cause symptoms such as tingling and pain, but it is not usually fatal. Although the threat of yellow sac spiders is not as great as that of some other species of spiders, their presence can also cause problems for people somewhat.
Tarantula (English name: Wolf Spider)
Tarantula
Tarantulas are a widely distributed spider that lives mainly on the surface, including grasslands, forests, deserts, and urban environments. Their name derives from their unique hunting behavior, similar to the way wolves catch their prey.
Tarantulas are usually large spiders that can reach a body length of more than 3 cm. They are usually gray-brown or dark brown with spots or stripes on the body. They have good eyesight and are very alert, able to move quickly and hunt their prey.
Tarantulas are usually found in grass or under stones, logs, or fallen leaves. But it seems that they have found some ways to live almost anywhere, some on cold, rugged peaks, others in volcanic lava tubes. From deserts to rainforests, fields to rural courtyards, tarantulas thrive.
Although tarantulas may seem more intimidating than other spiders, they usually do not attack humans and prefer to avoid contact. If you are accidentally bitten by a tarantula, it usually causes only mild symptoms such as pain, swelling, and itching, without major health effects.
Brown widow spider
Brown widow spider
Brown widow spiders are spiders commonly found in South and North America, and they are as venomous as other widow spiders, but their toxicity is relatively low.
Brown widow spiders usually have a brown or gray-brown body and a distinct "back pattern" on their back that help people identify this spider. The venom of brown widow spiders can cause symptoms such as pain, fever, dizziness, nausea, vomiting, and muscle cramps. However, brown widow spiders are less toxic than other widow spiders, and they also do not usually attack humans, only biting when disturbed or threatened.
Red widow spider
Red Widow spider
The Red Widow spider is a highly venomous spider found mainly in southern and central America. Their name comes from their bright red body, which makes them fairly recognizable.
Red widow spiders, like other widow spiders, are highly toxic but relatively low toxic, and the spider's venom can cause symptoms such as pain, dizziness, nausea, vomiting, and muscle cramps. However, because Red Widow spiders are less toxic, they will usually only feel mild pain and localized swelling if bitten. Red widow spiders usually live in dry and stony areas such as rock gaps, caves, and buildings. They are also a nocturnal spider that is mainly nocturnal and hides in a dark place during the day.
Brown recluse spider
Brown reclusive spider
The brown recluse spider is a spider commonly found in the central and southern United States, also known as the "fiddleback spider" or "brown fiddler". Its body is dark brown with a violin-like pale yellow or pale brown patch between the head and thorax. They prefer warm environments and are usually active in the central and southern United States. They often live in shaded, protected areas, such as piles of wood, leaves, or groves, and may also inhabit people's homes or their yards.
In some cases, the loner of the brown hermit spider will try to hide in shoes or clothing that have been on the floor for a long time. The spider's toxins are harmful to humans and can cause tissue necrosis and other serious physical reactions, especially in children and the elderly.
Redback spider
Redback spiders
The redback spider is a highly venomous spider that is mainly distributed in the Australian region. Their name comes from the striking red back logo on their bodies.
The venom of bareback spiders also contains neurotoxins, which can cause symptoms such as pain, dizziness, nausea, vomiting, muscle cramps, and difficulty breathing. In extreme cases, bites from red-backed spiders can also be fatal, especially for young or frail people.
Redback spiders usually live in dry and warm places such as stone crevices, storage rooms, waste accumulation, and toilets. They are also a nocturnal spider that is mainly nocturnal and hides in a dark place during the day.
Six-eyed sand spider
Six-eyed sand spider
The six-eyed sand spider is a spider that lives in Africa and the Middle East, and they are considered one of the most dangerous spiders in the world.
The six-eyed sand spider usually lives in desert or semi-desert areas, usually at night, and hides under sand or stones during the day. It doesn't look around for prey; It just stops for other spiders or scorpions to swim by. It will grab its prey with its front legs, kill it with toxins, and eat it. Their name comes from the fact that they have 6 small eyes, a layout that is very useful for finding prey in desert environments.
The venom of the six-eyed sand spider contains neurotoxins and tissue toxins, which can cause symptoms such as pain, nausea, vomiting, dizziness, muscle cramps, and difficulty breathing, and can also be fatal.
Black widow spider
Black Widow spider
Black Widow Spiders are named for their small size, black body, and the special behavior of Widow Spider females after killing males. The Black Widow spider is found in the United States, Canada, and parts of Latin America and is one of the most dangerous spiders in the world. Not only is the venom of females about 15 times stronger than rattlesnakes, but bites are also fairly common in the United States, with an estimated 2,500 bites treated each year.
It is said that being bitten by a black widow feels like pinpricks, followed by muscle pain and cramps, chills, nausea and local paralysis, making breathing difficult. Most victims recover without serious complications, but the mortality rate for Black Widow bites is 5%.
Funnel-web spider
Funnel web spiders
The funnel web spider is a very venomous spider that is mainly distributed in the Australian region. They get their name by constructing funnel nets to catch their prey.
The funnel-web spider is considered one of the most dangerous spiders in the world, and its venom contains neurotoxins that can cause symptoms such as pain, dizziness, nausea, vomiting, muscle cramps, and difficulty breathing. The bites of funnel-web spiders can be fatal to both humans and other primates. Smaller males have a stronger venom, which contains a variety of toxins that can kill a person at any time from one hour to three days. Since the rise of modern first aid techniques and reliable antivenoms, there do not appear to have been reported deaths from funnel net bites.
Funnel web spiders usually live in dark and moist environments, such as tree holes, under soil, stone crevices, and storage rooms. They usually wait for their prey in a funnel net instead of actively looking for it. Funnel web spiders often have strong adhesion and can make it difficult for prey to escape.
Brazilian wandering spider
Brazilian stray spider
The Brazilian stray spider is a spider that lives in the rainforest regions of South America, also known as the "giant golden orb-weaver" or "banana spider". It is one of the most dangerous spiders in the world and is known worldwide for its strong neurotoxins.
The legs of the Brazilian stray spider can reach a length of 12 cm. They are huge, bushy, slender spiders with eight eyes, two of which are large. The Brazilian stray spider is an agile spider with strong and spiny legs and a particularly red chin that is exposed when provoked.
They prefer to come out at night to feed and are often found in buildings, vehicles, and cargo. The venom of Brazilian stray spiders can cause symptoms such as muscle spasms, respiratory failure, and arrhythmias, and can even be fatal.
In Brazil, locals often call them "death spiders" and stay away from them as much as possible.
Do you have a spider friend around you? Would you mind if your friends around you have strange animals? Let's talk about it together~
The above content is sorted out by "unreliable science", if there is any error, welcome to point out!