- [Narrator] Think of dangerous beasts and what comes to mind? Sharks? Crocodiles? Clowns? Well believe it or not, man's best friend tops the list. Yap, dogs are the fourth
deadliest species on the planet and are responsible for a staggering 35,000
fatalities worldwide per year. And, to no-one's surprise, humans have bred some to be
more dangerous than others purely for their own gains. So, from brutish Bulldogs
to destructive Dobermans, these are some of the
most aggressive guard dogs in the world. (bright music) Well, hello there, cutie. Oh, sorry, I wasn't talking to you, I was talking to him. He's soft, cuddly and irresistible. He's my perfect real-life copy and you can take him home. Bartholomew Eggbert
Amazed is now available in all his fluffy glory. You've all been asking, so we finally made it. We have a plushy you can purchase. But hurry up though because we only made 500 of them. You might also wanna check out our amazing array of other
products in our store where you'll find premium quality T-shirts and hoodies with mind-blowing designs, super fun holographic stickers and mugs to inject an
extra dose of amazement into your caffeine kicks. And keep your eyes peeled because we'll be adding new,
exciting products frequently. All items are designed with love by us and every purchase you make directly funds what we
do here on this channel. Join the Be Amazed community and look cool while doing it. Ravenous Rotties. Let's start with a truly
pawesome gladiator of a dog. A little over 2,000 years ago, Roman soldiers were marching
through Northern Europe like they owned the place. I guess they had a lot of Gaul. Joke for the history buffs there. Anyway, accompanying the
troops was the Roman Mastiff, also known as the Molossus, a legendarily muscular dog used for farming and battle. The Roman's campaign path led through what is now Rottweil in Southwest Germany. As the centurions passed, many of these massive
Mastiffs were left behind, and then adopted by the locals. The Mastiffs got to know
the local country Sheepdogs intimately and the Rottweiler was born. Modern Rottweilers are
considered large, strong dogs, measuring 27 inches and
weighing up to 110 pounds. That's six times heavier than smaller dogs like Dachshunds. It's spectacular size means
a specially trained dog can pull about 1,000 pounds with several sources stating
that bigger specimens can pull some 15,000 pounds, which is roughly four times the weight of a typical car. Okay, that sounds fake. But, considering Rottweilers were used in their native
homeland to haul carts, that doesn't sound entirely unreasonable. Alongside hauling, they were also trained to herd and guard, which is an instinct many still carry. Look at this dog's
protective instinct kick in when a clueless coyote
wanders into its owners' yard. (dog growls) - [Dog Owner] Ollie! Oliver! - [Narrator] Oh, that was tense, but that Rottweiler stood its ground. Now, the breeds' popularity
really peaked in the 1990s, however demand for Rottweilers
led to bumbling breeders producing puppies with no regard for the dog's health or temperament. And it's fair to say that these dogs can be a bit overprotective at times. - [Child] Oh, we do. Mama, we just got it. - I have one more. - One more?
- Yes. - Dina! Dina! Dina! Sorry! - [Narrator] All joking aside, this reckless behavior has come at a cost. Between 2005 to 2017, Rottweiler attacks were
responsible for 45 fatalities, accounting for 10.4% of
all fatal dog attacks in the US in that period. If that wasn't bad enough, there was a total 666
reported Rottweiler attacks from 1982 to 2021. Talk about ominous. Bad publicity and unprepared owners have all resulted in the
dogs' unfair reputation, with some believing the
popular misconception that the breed was once used to fight. With proper care and training, a rottweiler can be as gentle as a kitten. So, less argh and more aww. Miss American Die. Everyone always thinks of me as this round, friendly guy, but that's not how I want to be known. I want to be seen as an edgy bad boy. Unfortunately for me, it's
hard to earn that reputation when you make YouTube
videos about tasty snacks and cute baby animals for a living. You know who does have a bad reputation? The American Pit Bull Terrier. Pit Bulls are brawny dogs, measuring in at around 22
inches tall at the shoulder and can weigh up to 80 or even 90 pounds. This canines' negative
reputation precedes it, with the pit bull being banned in numerous countries around the world, including the UK, Russia and Spain. This is because many believe these dogs to be dangerous and untrainable, with some going so far as to argue pit bulls are uncontrollable beasts that (gulps) eat babies! It isn't like this reputation
is unearned, however. From 1982 to 2021, American pit bulls were
accountable for 7,772 attacks, 5,331 maulings and 561 fatalities in North America alone. This means pit bulls making up 65.6% of all fatal dog attacks. Between 2005 and 2017 alone, pit bulls racked up a
horrifying 284 fatalities. Jeez. How can one dog be so dangerous, though? Well, the breed has a long history of being deliberately mistreated by owners who purposefully make
them more aggressive. While this may turn them
into formidable guard dogs, it's incredibly cruel and has made people
fearful of the poor pooch, and has negatively
impacted other dogs too. You see, back in the '80s and '90s, pit bulls were selectively
bred with bulldogs to create a whole new breed of guard dog, the American Bully. And no, I'm not talking
about Regina George. Bullies resemble their
pit bull progenitors, but with a seriously pumped up frame. Bullies can weigh around 130 pounds, which makes them twice as
heavy as other large breeds like the Dalmatian and almost the same weight
as an average 5 foot 4 woman. Sadly, the selective breeding required to reach this staggering state is often at the expense
of the dog's health, as some bullies can barely move under the weight of their own muscle. Funnily enough, in recent years the American
Bully has gained popularity in Britain. Not so funny is the fact that 2022 turned out to be the deadliest year ever for fatal dog attacks in the UK. 10 lives were claimed, with American Bullies
responsible for six of them. But remember, a dog reflects its master, and personally I don't
think any of those masters deserved those dogs. Barbarous Belgians. Seeing people accomplish impressive things always makes me wonder, what have I done with my life? But seeing a dog outshine me? That's a new low. This is the Belgian Shepherd and it's a fearsome overachiever. Able to reach 26 inches tall
and weigh up to 66 pounds, these dogs are quick and athletic and capable of jumping six
to eight feet in the air. They're also intelligent,
watchful and wary. Okay, so the complete opposite of me. Belgian Shepherds were
originally bred by farmers to herd sheep and guard against wolves. No wonder they're tough. Over time though, four
distinct varieties emerged: Groenendael, Tervueren,
Malinois and Laekenois. These dogs are so impressive, they've been employed by New
York City Police since 1908 and are used by the FBI to help guard the White House to this day. Like people, however, Belgian
Shepherds aren't perfect. In America and Canada, the Malinois variety was
responsible for seven attacks between 1982 and 2021. One story of a well-utilized
Belgian Shepherd comes from Kruger National
Park in South Africa, where a dog called K-9 Killer lived. K-9 was used by Kruger Park's
Special Operations Team to sniff out and catch armed poachers trying to kill rhinos for their horns. Due to the courage and dedication
of the Belgian Shepherd, 115 of these criminals were apprehended. For his efforts, K-9 was
awarded the PDSA Gold Medal in January 2016. Man, even with my whole life ahead of me, I doubt I'll ever outdo
this fantastic fido. You know what you can do that
a Malinois can't, though? Click those like and subscribe buttons! As smart as these dogs clearly are, they haven't learned how to do that yet. Okay, before someone
inevitably teaches them how, let's move on. Doberman Slaughter. Were you ever picked on by mean kids? I sure was. Last month was hard for me. Maybe I should engineer my own attack dog. That's what tax collector
Louis Doberman did in the town of Apolda
in modern day Germany during the 19th century. Being a tax collector, Doberman wasn't the most popular dude, and the fact that he walked around town carrying everyone's money made him an easy target for muggers. Talk about going through a woof patch! Doberman decided he needed protection, and luckily, he happened to
be a part-time dogcatcher. So, Doberman bred a
ferocious-looking super-dog from what he'd caught. The final product? A chihuahua! Nah, it was the Doberman, of course! Standing up to 28 inches at the shoulder and weighing up to 88 pounds, these dogs had the combination of toughness, speed and ferocity that the tax collector wanted. Even after Louis Doberman's death in 1894, his breed lived on. The Doberman's selectively
bred trait of aggression hasn't waned since the 1800s either. Between 1982 and 2021, the dogs were responsible for 23 attacks in the USA and Canada, eight of which were fatal. While grim, it's no surprise considering the canine's
well-developed teeth. When catching an animal, the dog's front incisors
will hold it in place, whilst their canines
or fangs finish it off. Good luck escaping too. A Doberman's bite force measures in between 245 and 300 PSI. For reference, the average dog bite is between 230 and 250 PSI, so the Doberman is packing
some extra crunch power. Their jaws are so powerful, their molars have the
capacity to crunch bone, so nothing goes to waste
when they're eating. And they look straight up
terrifying when they snarl. (laughs) Just kidding,
the Doberman on the left is wearing a creepy muzzle, and the Hungarian Mudi on the right there is carrying a pine cone. So nothing to worry about (shudders). Attackita Inu If you take a trip to the snowy peaks of Japan's Tohoku region, you may come across the Matagi people, and they'll probably ask how you decided on such a specific vacation spot. The resilient Matagi have
called this treacherous land their home for centuries, but because grocery stores are a little hard to
come by in the mountains, the Matagi forage from
the land around them. Hunters trek into the wilderness for game such as wild boars, deer and bears? Wait, how do they take down literal bears? Well, about 1,000 years ago, these hardy hunters bred
the formidable Matagi Inu to help them bring down dangerous prey and protect them from
these massive beasts. Fast-forward to the
Tokugawa era in the 1600s, where Japanese nobility continued to develop the Matagi breed, giving rise to the modern Akita. The aristocracy used the Akita as an imposing guard dog
and hunting companion. Today, Akitas may look
like cuddly-wuddly puppies, but remember, these things
were bred to bring down bears. Akitas typically measure
28 inches at the shoulder and weigh around 110 pounds. However, true to stereotypes, on average the American variant of Akita weighs around 30 pounds more
than their Japanese sibling. This difference came about when US soldiers returned home from Japan, bringing along these robust rovers. Through cross-breeding with
several other dog species, the American Akita emerged, a larger canine build with
a bigger, squarer head. Regardless of the dog's nationality, Akitas are still fearless fidos that won't back down from a fight. Unfortunately, this instinct has resulted in eight fatalities being
attributed to the Akita in the USA from 1982 to 2013. One reason it's so dangerous is that their bite is more
severe than other dogs. The scissor-shaped jaw of the Akita makes it hard to force open
once the dog bites down, meaning the dog must
often voluntarily decide to release its victim, which doesn't always happen. Maybe I won't take that
trip to the Tohoku region, you know, just in case
I'm mistaken for a bear. Alabai-Bye. Have you ever seen those
survival documentaries where a guy gets dropped
off in the middle of nowhere and then somehow has to survive? I don't think I'd even
survive being dropped off. But let me tell you about one dog that could give Bear
Grylls a run for his money, the Alabai. This noble hound is also known as the Central Asian Shepherd Dog or by the incredibly
cool name, Wolf Crusher. Yeah, really. With a name like that,
do I even need to go on? Don't worry, I will anyway. These colossal canines are
one of the oldest dog breeds in the world today, with a genealogy that dates
back over 5,000 years. Hailing from a territory spanning
the Caspian Sea to China, and Southern Ural to Afghanistan, these dogs weren't bred by humans, but are a product of natural selection. The breed was used by the
nomadic people of Central Asia to guard livestock from
thieves and wild animals. Chasing bears? That's one tenacious puppy. Alabais aren't the only big
boys in their family though, they're closely related to the equally-terrifying Tibetan Mastiff. Yikes! Being raised in such harsh terrain has made the Alabai well
suited to extreme climates. Whether it's sweltering
heat or brutal cold, this ancient pooch can handle it. Standing some 28 inches at the shoulder and weighing in at 110 pounds, these dogs make for
intimidating protectors. They're loyal defenders of their families, but their territorial nature makes them tricky to train. Additionally, their instincts make them highly suspicious of strangers. This mix of traits make them effective, if highly dangerous guard dogs. Despite there never being a
reported instance of an attack, the breed is banned in Denmark. That's how scared the Danish
are of this loyal dog. These dogs would make awesome assassins. Once they take out an enemy of yours and the cops come calling,
you can just tell them, "Sorry, officer, I have an Alabai." Snapping At The Heelers. Pineapple on pizza, fried
chicken and waffles, olive oil and ice cream, these are all bizarre combinations that some people swear by, but to me they all seem
a little eccentric. Still, those combinations have
nothing on the Hall Heeler, which is a mix between a
wild dingo and sheepdog This mad breed is the creation
of one man, Thomas Hall, a farmer who lived in 19th
century Queensland, Australia. Oh, Australia? Now it makes sense. Hall wanted a dog tough
enough to herd cattle under the cruel Australian sun. His English sheepdogs
weren't cutting the mustard, quickly growing tired in the heat. So, Hall took some dingoes he had tamed because he was clearly a psychopath, and then bred them with his sheepdogs. The hybrid was called a Hall Heeler, and is the ancestor of the
modern-day Australian Cattle Dog. Australian Cattle Dogs, also known as Heelers because they nip at the heels of cattle, stand some 20 inches tall and only weigh around 44 pounds. They're not as big and bulky
as other dogs we've met, but what they lack in mass they make up for in grit and intelligence. With a natural tendency to bite, Heelers make vigilant guards, but if not properly
trained can become bored. When under-stimulated,
these dogs can act out, becoming destructive and dangerous. From 1982 to 2021, these
dogs were responsible for 32 attacks in the USA and Canada. I have some pretty snappy
co-workers at Be Amazed HQ, maybe they've got some
dingo blood in them too. Slobbering Sumo. You've heard of sumo wrestling? Two big guys step into a little ring, then wrestle like crazy. Classic entertainment, right? But did you know dogs can
be sumo wrestlers too? But surely a dog playing
sports is against the rules. - Aint no rule said the
dog can't play basketball. - [Narrator] Meet the Tosa Inu, a Japanese fighting dog with a history as fiery as its spirit. Originating from Tosa, this breed was developed 150 years ago, and then soared in
popularity in the 1920s, which was, non-coincidentally, also the peak of dog-fighting's
popularity in the country. Native dogs were combined with Mastiffs, Bulldogs, St. Bernards and Great Danes to eventually create a hulking dog, 26 inches tall and with a
weight of up to 200 pounds. That's four times the
weight of a Golden Retriever or the average weight
of a six foot three man. As you can imagine, this made the breed quite an intimidating fighter. While dog-fighting has been
banned in many countries, it continues in certain areas of Japan, despite concerns from
animal rights groups. Owning a prize-fighting dog
can be incredibly lucrative, with champions fetching six-figure prices for their breeding potential. Just look at this warrior
receiving his reward. I think that's what's happening anyway. All this has earned Tosas the nickname of the Sumo Dog. Now, I'm not endorsing dog-fighting, but sanctioned Japanese dog fights are different from illegal
fights in the West. The goal of a Japanese dog fight is not for the dogs to hurt each other, but for one dog to pin the other down without injuring its opponent. Vets are always on standby to halt the fight if they
notice any sign of injury. The audience aren't allowed to bet either. Despite these measures though, Tosas are still bred to be fighters, which means they don't tend
to get on with their own kind. (dogs bark) Despite there being no reported
attacks linked to them, Tosas have been banned
in several countries, including the UK, Ireland, Germany, Australia and New Zealand. However, in places
where they remain legal, Tosas are utilized as
formidable guard dogs, drawing on their combative instincts. If I ever took up sumo wrestling, and believe me, I've got the physique, there's no way I'd want to
clash with these canines. Brasileiro Assassino Let's take our minds back
to 17th century Brazil, an easy task we all perform
constantly, I'm sure. In 17th Century Brazil, plantation owners faced a problem, their livestock was being preyed upon by jaguars and other predators. So, they did what every person featured in this video so far did, they engineered a
super-dog fit for the job. Born from a mix of bulldogs,
mastiffs and bloodhounds, the Fila Brasileiro is a formidable force. Standing at a beastly 30
inches at the shoulder, weighing up to 110 pounds and running at speeds
of 35 miles per hour, these powerful canines are perfect for chasing big cats. However, that was only the beginning of this breed's trouble story. You see, filar derives from Portuguese, meaning to hold or to grab, and the dogs got that name
for a very unfortunate reason. During the 17th century, slavery was still very
much legal in Brazil and if a slave escaped
from their plantation, Filas were released to
pursue and apprehend them. The Fila has a bite force of over 400 PSI, which zooms past most dogs
and into wolf bite territory. Unsurprisingly, the aggressive
and domineering nature hammered into them has been hard to shake. The dog has been banned
in numerous countries, including the UK. And you'd think these stats would've put Brazilians off the dogs, but they're wild about them. The Filas' loyalty towards its owners has led to the Brazilian saying of being as faithful as a Fila. However, this loving disposition doesn't extend to strangers. Filas hate being touched by people they're unfamiliar with. With that in-built hunting instinct, the dogs don't sit well with other pets such as cats or even smaller pups. Jeez, so, if you like your
hands attached to your arms, I suggest resisting the
urge to pet these pooches. Boer Brute. Imagine you're a diamond mining company and you need something to
protect your prized gems. What are you going to do? Install cameras? Hire security guards? Boring. How about the Boerboel? Now you're talking. These impressive dogs stand 28 inches tall and can weigh a whopping 200 pounds, so both taller and heavier
than a keg of beer. The breed's beginnings
start in South Africa, where the Boers descendants
of Dutch settlers were toiling away on their farms. In case you thought farming in the cruel South
African sun was too easy, the Boers also had to contend with an entire ecosystem's
worth of hungry predators eyeing up their livestock. I'm talking jackals, lions, hyenas, some real nasty customers. To put an end to those pesky predators, the Boers employed guard
dogs to defend their herds, and they needed specialists. Only the toughest dogs could
survive the harsh climate and only the fiercest could scare off these enormous predators. The word Boerboel comes
from the Afrikaans word for farmer's dog, which makes sense. It's not known exactly what breeds made up these
great big cocktails, but they were fierce. They're likely a mix of mutts brought from Europe by settlers, who then interbred with
indigenous domestic dogs, the settlers' dogs that is. Not the settlers, they weren't that desperate
for more guard dogs. The De Beers diamond company later imported Bullmastiffs from Britain to guard their mines from thieves, which also contributed
to the Boerboel's DNA. Eventually, De Beers would
notice the Boerboel's prowess and adopt them as their
diamond-guarding dog of choice. These days it is rare to see the South African beast outside of, well, South Africa. Despite their rough employment, Boerboels are very
protective of their owners and are known to be
affectionate with children. The same strength and territorial instinct that helped them protect farms and mines makes them superb guard dogs. That being said, the dogs require a confident, dominant handler. That rules me out then. Guess we'll have to go
back to using Chihuahuas to protect the Be Amazed
diamond play button... Caucasian Killer. If you ever wind up in a Russian prison, well, you're definitely
having a worse day than me. But in addition to the roughnecks, cramped living quarters and
limited flavors of gruel, you also have to watch
out for the guard dogs. Meet the Caucasian Ovtcharka, known as the Caucasian Sheepdog. These Russian dogs typically
stand up to 30 inches tall and weigh around 154 pounds, though they can get much bigger. Take Cadabom's Hayder, for instance, the largest in the world. Hayder is six feet long
and weighs over 240 pounds. Looking at this guy,
you won't be surprised to hear the breed was once
used to fend off predators. The bulky brutes have been around for over 2,000 years, originating from the
Caucasus Mountain region. Farmers used them to guard their sheep, fending off bears and wolves. The high altitude's cold temperatures made the dogs incredibly fluffy, but don't let that disarm you. These bruisers' guarding skills have been utilized
throughout the centuries guarding farms, prisons, and even patrolling the
Berlin Wall in East Germany during the 1960s. Now, let's talk bite force. Humans have a bite
force of around 162 PSI, which isn't too shabby, but what about the Ovtcharka? Well, their bite force is 700 PSI! Not only is that greater than any other dog we've looked at so far, but it's also more than twice
as powerful as a leopard, measuring in at a measly 300 PSI. Talk about a jaw-dropping difference. While these dogs excel at security, they're ill-suited to
life as a family pet. They can alternatingly be aloof and aggressive with strangers, and can become especially hyper when dopes leave them chained up outside. I mean, I wouldn't like that either. I know these guys have
an unpredictable temper and a crazy-strong bite, but they're so fluffy,
I still wanna pet one! Though, maybe it's wise I
keep a safe distance if I do. Raging Bulldog. Back in 15th century Britain, the now extinct Old English Bulldog was used for the barbaric
sport of bull-baiting. This was the practice of forcing dogs to battle fully grown bulls for the amusement of
gamblers and onlookers. Dogs would grab onto
a tethered bull's nose and try not let go until either the bull had
been dragged to the ground or the dog perished trying. Despite being dwarfed by its opponent, an 80 pound bulldog could
topple an adult bull by grabbing on and
corkscrewing its body around, flipping it over its
own center of gravity. It was a cruel and brutal spectacle. Thankfully, the UK banned
bull-baiting in 1835. After the ban, modern bulldog
breeds began to emerge. Notably, the French and British Bulldogs, which many find cute, but which suffer numerous health problems due to their squashed faces and resulting constricted airways. A little later, their cousin, the American Bulldog emerged after British immigrants
arrived in the American South. These settlers actually brought their bulldogs with them for farming. Ranchers bred the dog to be bigger and stronger
than their ancestors and used them for guarding animals and hunting down feral pigs. By the 1960s, the American
Bulldog we know today was fully developed. At 28 inches tall with a
weight of up to 120 pounds, the American Bulldog is a
stocky, powerful character able to jump up to
seven feet into the air. Though they can make a loving family pet, centuries of bull-baiting and guarding have left their toll on the breed. American Bulldogs can be territorial and, like all dogs we've discussed, aren't keen on strangers. They can be really mean fighters too. Just look at this bulldog
chew on this dude's leg. Maybe it ate that other dude's shirt too. Between 2005 and 2017, American bulldogs were responsible
for 15 kills in the USA, accounting for 3.5% of all fatal
dog attacks in that period. Though it's easy to blame
the breed's troubled history, it's important to remember that any dog can aggressive if it's mistreated or abused. Cruelty doesn't create
effective guard dogs, it creates monsters. Well, it looks like we've come
to the end of our walkies. What was your favorite guard dog? Any you're especially scared of? Let me know in the comments below, and as usual, like and subscribe for more amazing content. Thanks for watching. (cool music)
