The worlds most dangerous spiders They are scary, sometimes pretty, small but
pack a big bite.
10: Hobo Spider The hobo spider, more commonly referred to
as the aggressive house spider is on this list based on a toxicology study on rabbits
where necrosis type lesions appeared on them after being bitten.
This study proposes that in some parts of the U.S. Most bites attributed to the brown
recluse spider are in fact a hobo spider's bite.
While arachnologists continue to debate whether or not the hobo spider bite actually causes
necrosis, the CDC cites the study to say that it does.
While the hobo spider bites are not known to be fatal to healthy humans, the wound can
take months to heal
09: Mouse Spider There are 17 known species of mouse spiders
with all but one found living in Australia.
This spider gets its name from an old legend that the spiders would dig deep burrows like
a mouse.
The female mouse spider is all black, with male spiders having species specific colouration.
The male eastern mouse spider has a blue patch and the male red-headed mouse spider has is
brown or blue black in color with bright red jaws.
This spider is on the list because its bite produces serious symptoms much like the Australian
Funnel spider.
There is some good news though.
While the mouse spider bite can be serious, most don't require the use of antivenom or
induce serious symptoms.
In fact, the mouse spiders isn't very aggressive towards human and may often give what is referred
to as dry bites where no venom is injected at all.
08: Yellow Sac Spider The yellow Sac Spider also known as the black-footed
spider is a relatively small spider about � inch long.
They are usually a pale beige or yellowish color.
While they usually feed on other spiders and your usually suspects of garden insects, they
are attracted to the smell of gasoline, so be careful when reaching for that gas can
in the garage.
These spiders are quite common in North America have very jaws and the fangs can penetrate
human skin very easily.
While there are no records of a yellow sac spider bite being fatal, their venom is purportedly
a necrotic which means it kills living tissue and could cause a skin lesion.
This could lead to a MRSA infection which is an antiboitic resistant staph infection
while not often fatal become extremely difficult to treat.
07: Fringed ornamental Tarantula The fringed ornamental tarantula can be found
living communally in the holes of trees in Sri Lanka.
They subsist mainly on flying insects which they paralyze with their venom.
While there are no recorded deaths from any tarantula bite, the fringed ornamental tarantula'
is considered to have a medically significant bite with reports from spider handlers stating
that the venom caused intense pain and extreme muscle cramping.
This species of spiders also moves very rapidly and because of its potential speed and venom
they are not recommended as a beginners tarantula.
06 Brown Widow Spider The Brown Widow S pider is a cousin of the
Black Widow and Red Back Spider.
The brown widow is usually lighter than the black widow, but may come in a variety of
colors from tan, to grey to black.
The brown widow's hourglass marking is usually a vivd orange or yellowish color.
While they are usually found in tropical areas they have been found in many areas including
South Africa, the US Australia even China.
These spiders inject a neurotoxic venom that is as venomous as that of a black widow's
however because a brown widow can't inject as much venom as its cousin the bite is much
less dangerous.
Regardless sympoms of a brown widow spider bite are unpleasant to say the least.
They include pain, muscle rigidity, vomiting and sweating.
05: Six-eyed Sand Spider The six-eyed sand spider also known as the
six eyed spider crab is found in the deserts of southern Africa
It is an ambush spider, meaning it buries itself just under the sand to catch unsuspecting
prey instead of using a web.
While bites to humans have never been proven, the two suspected cases on file the spider
was never identified.
One victim lost his arm to massive necrosis, the other victim died of massive hemorrhaging.
The six-eyed sand spider's venom has been demonstrated to be extremely potent in toxicology
studies, killing rabbits within 5-12 hours.
The venom has a very powerful hemolytic and necrotoxic effect that causes blood vessal
leakage, thinning of the blood and skin tissue destruction
Currently there is no anti-venom for this spider's bite.
04: Black Widow Spider The black widow spider is part of the family
of spiders known as widow spiders which consists of 31 recotnized species.
You can find these widow spiders all over the world with the females usually being dark
colored and having a red shaped hourglass marking on the abdomen.
The female of the species usually participates in what is known as sexual cannibalism a behavior
where the female eats the male after mating.
This may be done to increase the survival odds of any offspring.
The black widow bites are highly venomous and about 15x's as toxic as the venom from
a rattlesnake.
A bite can result in systemic effects which may include severe muscle pain, abdominal
cramps, excessive sweating, increased heart rate and muscle spasm.
The symptoms can last anywhere from 3-7 days or even several weeks.
About 2,200 people are bitten by a black widow each year but most victims are treated and
recover within 24 hours.
In 2013 over 1800 black widow bites were reported to the American association of Poison control
centers and only 14 of those resulted in severe symptoms, zero resulted in death.
While death is rarely an occurrence for a healthy adult, children and the elderly are
still vulnerable.
03: Brown Recluse The brown recluse is another one of the more
infamous spiders on our list.
Also known as the fiddleback spider due to hits violin shaped markings on its dorsal
side.
This is exactly how I identified the one crawling on my arm one night while watching a football
game with my dad.
The brown recluse is not an aggressive spider it in fact will attempt to retreat from danger
and if cornered it may even play dead.
They have a necrotic venom and it is considered medically significant.
If bitten by a brown recluse you may not even notice it but that doesn't mean it isn't serious.
While most bites are minor, some bites produce severe dermonecrotic lesions where an open
sore develops and the skin around it dies.
Healing can sometimes take months.
02: Brazilian Wandering Spider The Brazilian Wandering spider is not only
aggressive, but highly venomous.
Also known as banana spiders because they have been found in shipments of bananas through
out the world.
These rather large spiders will exhibit a defensive posture of raised legs when approached.
And while they do hold the reputation as one of the world's deadliest spiders, studies
suggest that they only inject venom in approximately one third of their bites.
Their venom is a neurotoxin and at deadly concentrations causes breathing problems,
loss of muscle control, paralysis and eventual asphyxiation.
One strange fact about this spider, is that it can also result in a painful erection that
can last for many hours and ultimately lead to impotence.
I don't know what to make of that.
I'm stunned.
01: Sydney Funnel Web This last spider on our list the Sydney Funnel
Web Spider is considered to be the most dangerous spider in the world because its venom can
kill a human within 15 minutes of a bite.
You can find this venomous beast where all things deadly seem to migrate, Australia.
The spiders venom is extremely toxic for humans.
What makes the sydney funnel web spider even more dangerous is that when biting, they usually
deliver what is termed as a full envenomation meaning they dump as much venom into the bite
as they can.
They are also highly defensive and will strike repeatedly with their extremely large fangs
and in some cases the spider once it becomes attached it won't release itself and must
be dislodged by shaking or knocking it off.
Once you are bitten, you have about an average of 28 minutes before the onset of symptoms
begins, that is if you're a healthy adult.
Children made up 42% of all Sydney funnel web spider bite cases with one child dying
within 15 minutes of being bitten.
Symptoms include hyotension, circulatory failure, respiratory failure, sweating, nausea, diarrhea,
pulmonary edema and pain.
Victims are treated with anit-venom.
In February of 2017, this 10 year old boy was given 12 vials of anti-venom, which is
a record for most ever used on a patient.