10 Most Dangerous Spiders Found on Earth

These 10 most dangerous spiders can be fatal and dangerous to mankind. Spiders cannot be regarded as shy, silent creatures after you read this article.

We bring to you a list of deadliest spiders that look terrifying and may bring a nervous breakdown after you read about their poisonous bites and the damage they might bring to human beings.

10 Most Dangerous Spiders Present in the World

There are around 40,000 types of spiders in the world except in the Antarctic. Spiders belong to the Arachnid family with body segments, 8 legs, antennae and cannot chew. Spiders are peaceful creatures that may be dreadful when disturbed.

Let us know about some of the most dangerous spiders in the world.

1. Australian Funnel Web Spider

Australian Funnel Web Spider

The Australian Funnel Web spider is mostly found in Australia and America. The name originates as they are known for their funnel-shaped webs. They have poisonous bites which may even result in death.

According to reports, Sydney has experienced several deaths since 1920 due to the poisonous venom of Funnel Web Spider. In fact, this is the reason why it is top on the list of most dangerous spiders of the world. The antidote is the ultimate cure for the funnel web spider if taken as soon as the insect bites.

2. Redback Spider


The spider can be identified with an hourglass-shaped mark on its abdomen. Mostly this mark is visible clearly on females rather than males. Both males and females are highly aggressive and poisonous.

The Redback spider can inject toxin which may lead to pain, sweating and irregular heartbeats. The amount of venom injected depicts the rate of fatalities that may occur.

3. Red Widow Spider


The spider can be recognized by a reddish cephalothorax and legs and abdomen colored reddish brown to black. Many Red Widow spider has a red mark which may appear like an hourglass shaped or an abstract design.

They are not aggressive, but their bite may cause pain, cramping, nausea etc. Children and elderly are likely vulnerable to severe fatalities.

4. Brown Widow Spider


The Brown Widow Spider evolved in Africa but are widespread in California, U.S, Caribbean, Japan,  Australia etc. They are found in human dwellings and can be a threat when provoked unknowingly.

They have colored abdomens that range from brown, black, white, yellow or orange markings. The Brown Widow venom is twice as powerful than the Black Widow Spider.

5. Black Widow Spider


They are shiny black and contain a bright red to orange hourglass placed in the abdomen. Prominently found in the United States, Canada residing under wood piles, plants, burrows etc.

The Black Widow Spider kills its mate after mating thus very less male spiders survive. The venom may call for muscle pain, cramping, nausea, mild paralysis of the diaphragm.

6. Wolf Spider


They are found throughout the world, creeping, crawling and feasting over bugs.The name defines its physical characteristics like wolf-like chasing and pouncing. It builds a silk lined nests sealed with rubbish.

A slight movement may alarm the spider for self-defense. The Wolf Spider venom may result in physical trauma, dizziness, itchiness, and nausea.

7. Yellow Sac Spider


The Yellow Sac Spider has a yellow sac-like appearance. They are 3-15 mm long and build silken tubes under stones, leaf mold etc. they are venomous and stay indoors with humans.

It is found mainly in U.S and Mexico. The ant-like bite may lead to lesions, redness, swelling.

8. Brazilian Wandering Spider

Deadly spider in Australia
Dangerous spider on earth

They love for residing in banana leaves, gives it another name as Banana Spiders. They have an aggressive defense posture in which it raises its legs, indicating a fight.

Recorded in the Guinness Book of World Records as ’World’s Deadliest Spider in the World’. Symptoms include salivation, irregular heartbeats and painful erection in men. The Giant Hawaiian Cane Spider is another huge spider found in Australia just like its name!

9. Brown Recluse Spider

BROWN RECLUSE SPIDER Most Dangerous spider

The most dangerous spiders in the United States, the venom destroys the walls of blood vessels at the bite site causing skin ulcers. If proper care is not taken, then the wound may be infected and would take months to recover.

Also known as Violin Spiders because of Violin shaped mark on its head.  The Brown Recluse spider bite  is rare.

10. Chilean Recluse Spider

most dangerous spiders CHILEAN RECLUSE SPIDER

The Chilean Recluse bite can cause mild skin irritations, severe premature death. Extremely poisonous in nature, the venom is toxic to cells and tissues. The spider can be dangerous like the rattlesnake, but much effect is not observed with less quantity of venom injected.

Unlike other spiders having 8 eyes, this spider has just 6 eyes placed in pairs. Probably, it is one of the least most dangerous spiders in our list.


These spiders are the most dangerous spiders only when it senses danger. Female spiders bite more as compared to male, just to protect its offsprings. Proper medication and care will heal the wound if antidotes are received at a proper time.

Read more to know more! In a near future, we shall provide an update on how to avoid such bites along with necessary precautions to take. Later, we might provide few measures to cure if you are bitten by most dangerous spiders mentioned here. Clock spider blog will cover more such spiders for our enthusiastic readers.

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