- [Narrator] In the animal kingdom, it doesn't always pay to be nice. In many cases, being
born with a nasty streak can make surviving a whole lot easier; for the aggressor, that is. But just how mean do the
animals of our world get? Well, from the small and mighty, to the biggest brutes on the planet, here are some incredibly
aggressive animals that could use an anger management course! (upbeat music) (laser whooshing) Tasmanian devil: in the early 1800s, when migrating to Australia's
nearby landmass of Tasmania, early European settlers found
themselves pretty unsettled by what they encountered. They began hearing unearthly screams, coughs, and growls coming
from the woodlands. Upon investigation, they
discovered dog-like creatures with red ears, sharp teeth, and the feeding ferocity
of frenzied piranhas. So, they named the creatures
something suitable: Tasmanian devils. But is this creature as
malicious as its name suggests? Well, to humans, not usually, as they tend to freeze up around us. But to their prey? Oh boy! As opportunistic carnivores,
they will essentially scavenge for any meat they can get their paws on: from reptiles, amphibians,
wombats, and small kangaroos, to carrion of dead animals,
and reportedly, even humans. So, while they don't hunt humans, they don't mind tucking into our remains, should the opportunity arise! Given the sounds they make, you'd best be grateful you're
unlikely to end up hunted by a pack of them while still alive. (Tasmanian devil grunting) Talk about aggressive! With their disproportionately large mouths affording the most powerful
bite relative to body size in the animal kingdom, they're even capable of crushing the bones of their unlucky victims. And with the ability
to pursue prey up trees and across water, Tasmanian
devils don't mess around! When it comes to mating, there's little TLC between devils either, as they take a similarly
aggressive approach. The male will fight
viciously for the female, and when he succeeds, will drag her by the scruff of the neck back to his den to do the deed. I only hope they have a safeword! Once the deed is done, the
male will guard his mate for the brief pregnancy period of 21 days. Once the litter of as
many as 50 pups is born, it's a fight to survive, as the mother only has
four teats to go around. Shockingly, 90% of the
litter won't make it, as these little beasts have evolved so that only the toughest make it beyond the first few days of life. No wonder they grow up with a mean streak! (whip cracking) Honey badger: unlike
their name might suggest, honey badgers are not sweet. In fact, these little
guys are so aggressive that they've even earnt themselves a place in the Guinness Book of World Records as the world's most fearless animal. Let's find out why. First of all, they're
opportunistic carnivores, and with them being immune to snake venom, things that most other animals
wisely avoid, like cobras, are just another tasty snack for them. Besides this, they're
incredibly territorial, meaning if they find any
intruders near their burrow, they have no problem seeing them off. Even if said intruder is
much bigger than them, and that includes cheetahs, and even more impressively, lions! (honey badgers grunting) (honey badgers squeaking) (honey badger hissing) So, how is this creature, which only tends to measure
around 10 inches long, able to fend off such large opponents? Well, for starters, there's
the initial shock factor of the creatures rushing at opponents, hackles raised and growling, while emitting a potent
scent from their anal glands. What's more, in the animal kingdom, an animal never knows where
its next meal might come from. So, in the example of the
lions in that clip we just saw, using their energy reserves
wisely means realizing that this annoying little
creature we call a honey badger isn't going to stop bugging
them until they move along. So it's probably not worth the
effort to try to overpower. And indeed, this perseverance is exactly what makes the honey badger so successful. It's well-equipped for a long-haul battle, with an exceptionally tough hide that's not only robust enough
to withstand bee stings, porcupine quills, and
even large animal bites, but it's extremely loose-fitting. This means when a large
predator's jaws grip it, it can wiggle around and
maneuver its way free a lot of the time. There are, of course, certain cases where a honey badger probably
regretted picking a fight, like this hilarious moment
when an irritated antelope headbutted a badger back
from whence it came. But for most of the time
spent roaming their habitats across Africa, Southwest Asia and India, honey badgers simply don't give a (quack). (whip cracking) Cassowary: ever heard of a cassowary? These big flightless birds,
which reach up to six feet tall, are native to Papua New Guinea, Australia, and other nearby islands, and are considered one of
the most dangerous birds in existence. While they mainly feed on vegetation, they're really omnivores, meaning also they have
no problem chowing down on small animals from time to time. And while they don't eat humans, they can be hugely territorial, and aren't averse to showing
us what those claws do if we provoke them. As TikToker Domestico found out, even flipping them off can
get them squaring up to you. - [Man With Camera] Yo, I think I've come across a roadblock. Way, get off the (quack) road, mate. Please, just (quack). Oh god no, oh god no, no, no, no. (quack) That. (laughing) - [Narrator] Who knows
what could've happened had that cheeky driver
not wound his window up? Well, if cassowaries' track
record is anything to go by, it'd involve a powerful kick
with those dinosaur-like legs, equipped with razor-sharp claws. And without the protection of a car, their ability to run at
up to 31 miles per hour means even Usain Bolt
would struggle to evade one of these high-kicking terrors! With hundreds of attacks
on humans per year, and having actually
killed humans in the past, this big bird's ledger is as
red as that weird little flap dangling off its face, known
as a wattle by the way. So steer clear! (whip cracking) Baboon: yeah, yeah, we all know
what baboons are famous for. Go ahead, laugh all you want. But these primates are more
than just big red butts. They're angry big red butts! With their insanely sharp,
two-inch-long canines capable of crushing bone, and an ingrained penchant
for aggressively dominating the lands in which they live, these big-tooshie-terrors are no joke! While baboons typically snack on fruits, roots, and on occasion, small animals, those living in close proximity
to humans have developed a craving for our own tasty,
calorie-dense food and drink. As countless clips shared online of human-adjacent colonies
in South Africa show, they have no inhibitions
about snatching stuff from our hands, and will
even steal from cars. And good luck telling them no. (man speaking in foreign language) (woman speaking in foreign language) Not even a please or thank you. Would you believe it? This aggression is due to them being incredibly possessive over food, so any attempt to retrieve food from them will almost always result in an attack. Aside from that, things like
running, showing your teeth, or even looking them
straight in their eyes can be interpreted as a sign
of aggression to a baboon, and may trigger an attack. Should you find yourself
being accosted by a baboon, experts recommend that you remain calm and slowly back away without
turning your back to them. Man, these fellows are so aggressive, I'm surprised the mob hasn't
hired them as debt collectors! (whip cracking) Least weasel: despite
what its cute demeanor and petite size might suggest, the least weasel is a fierce,
bloodthirsty murderer. Oh, but don't worry though,
given that they're only usually between 4 and 10 inches in length, they probably won't be
troubling you anytime soon. They're much too busy
savagely hunting small rodents to the extreme. With an ability to wrap
its long, muscular body around its prey, the weasel
easily delivers a lethal bite to the back of its victim's neck, puncturing the spinal cord, leaving prey either dead, or paralyzed. But it doesn't just do
this when it's hungry. The least weasel has
evolved an instinctive, insatiable bloodlust, meaning it feels compelled
to hunt constantly. When prey is plentiful,
these weasels have been found to stockpile as many as 50
dead rodents in their burrows. Oh, and most devious of all? The least weasel doesn't
even dig its own den; it steals the abandoned
burrow of other species, sometimes the very victims
of its endless hunt! But if you thought these
malicious mustelids couldn't get any more
gangster, brace yourself. It turns out, least
weasels have been observed hijacking woodpeckers! Like something from Grand Theft Auto, this little guy was caught on camera by amateur photographer, Martin Le-may, in Essex, England, back in 2015. While this is far from normal behavior, least weasels have been observed attacking and killing animals considerably
larger than themselves. And indeed, it's likely
that the photo captured an attempted assassination attack! These little dudes
couldn't be more aggressive if they tried, and I can only
imagine that there's a gun in that GTA weasel's other hand. (whip cracking) Nile crocodile: can you
really say you're surprised that a crocodile has snapped
up a place in this video? There are good reasons
these ancient predators, as we know them today, have been around for 85 million years. Just ask the Nile crocodile! These sneaky creatures mainly lurk the freshwaters of Africa, and can grow to monstrous sizes, with the average male being 12 feet long and around 900 pounds heavy. Like many of its relatives
in the crocodilian family, the Nile isn't all that
fussy when it comes to food. And while it mainly fuels up on fish, it will prey upon pretty much anything, including zebras, humans,
and even other crocodiles! The Nile crocodile shows its
aggression most terrifyingly when preying on land animals. Notorious for its lurking beady eyes, the croc will passively
float at the edge of water where its prey habitually drinks. Then, with a sudden lunge,
it snaps up its victim, clamping down with a bite force of 5,000 pounds per square inch, before submerging and
drowning it in the water. If the prey fights back, the
croc savagely spins around, breaking and shredding
its prey into submission. Isn't nature beautiful? And as I briefly mentioned,
we humans aren't safe either, considering Nile crocodiles claim upwards of 200 lives per year! So, fellow humans, steer
clear of these mean, green, killing machines, or run the
risk of being a-Nile-ated. (whip cracking) Chimpanzee: as babies, chimps are just
about the most lovable creature in the world. When they grow up though, it's not long before they go from cute to unbelievably brutal killers. And not just of the fruits, nuts, insects, and smaller monkeys that
usually fill their bellies. In their jungle homes across
central and western Africa, chimp social groups have been
observed to go out on patrols looking for other chimps they
can steal territory from. When they find rivals, the clans begin screaming
and smacking trees to intimidate each other. If one group doesn't back
down, they'll close in, and use a combination of lethal strikes from their muscly arms and ferocious bites from jaws evolved to shred flesh, until one group eliminates the other. Horrifically, the appetite
for killing fellow chimps isn't limited to adults. A baby chimp will be
treated with equal contempt, and it won't be spared
the chimps' darkest habit: occasionally eating their
defeated chimp rivals. As you can imagine, these
surprisingly brutal animals will just as quickly grind
their canines at us humans, and countless tales too horrific for YouTube's monetization
policies have been logged of chimps mauling humans, particularly when held in captivity! So, if you enjoy having a face,
my advice to you is simple: stay away from chimpanzees. (whip cracking) Rhino: in central, eastern,
and southern Africa, as well as parts of India and Indonesia, there roams a living tank: the rhinoceros. Once presumed by Westerners to
be merely the stuff of myth, these stocky, horned creatures are among the largest land mammals on Earth, second only to elephants. But while we'd like to think rhinos are gentle giants like elephants, they've evolved to err much
more on the side of aggression! With muscular bodies,
thick skin, and huge horns, the rhino is easily protected
from most predators. In fact, its only predator
is human poachers, who sadly sell their
horns on the black market. But while the rhino's
relatively poor vision makes it easy pickings for
a poacher with a rifle, it remains a highly-dangerous
foe when up-close and unarmed. With exceptional senses
of hearing and smell, when threatened, rhinos
become extremely hostile and will put their horns to good use as they assume a charge. Now, just picture this: a hulking mass, upwards of 3,000 pounds, coming at you as fast
as 34 miles per hour, with a sharp horn on the end of it. For TikToker Xetnia, this was
exactly the situation in 2021. - [Woman] Oh my god,
Niall, oh my god, Niall. Niall (quack). - [Narrator] With that bluff charge, I think it's safe to say
that both Xetnia and Niall pooped their collective pants! The good news, however, is that rhinos don't
want to kill or eat you. They're extremely
territorial, so when someone or something is in what
they consider their space, they only want to chase it away, or hurt it enough to the
point it's no longer a threat. Still, I don't know about you, but I certainly wouldn't
want to find out first-hand how many of my bones
a rhino needs to break before it decides I'm no longer a threat! (whip cracking) Polar bear: thanks to
their elegant white coats and cute cubs, many
people assume polar bears are gentle creatures. Yet, this couldn't be
further from the truth. In fact, the WWF deem them
as a major risk to humans who find themselves in their vicinity, and that likewise applies to
most creatures they come near. While their favorite dish
is a serving of seal, they aren't too picky
when it comes to food, scoffing anything from
birds and beluga whales to the tall, hairless apes we call humans. With their natural habitat in the Arctic lacking in vegetation, polar bears are the
most carnivorous member of the bear family, and have evolved to hunt pretty much any
living thing they see. And even if they don't see it, they'll probably get a whiff of it, considering they can
smell a tasty bit of prey within a 20-mile radius. Despite the desolate lands they inhabit, the availability of creatures like whales, seals and sea lions is
what allows polar bears to grow so large, counterintuitive
though it might seem. This is because their
prey typically possess a lot of blubber to stay
warm, which is, in turn, a great source of energy
and fat for the bears. With plenty of fat reserves, the polar bears themselves
can stay warmer, and the added bulk helps
them grow stronger too, ranking them among the
fiercest predators on Earth. With a bite force of 1,200
pounds per square inch, these apex predators are able to take down pretty much anything they encounter. And even with their
average 1,000-pound mass, they can run up to 25 miles per hour, making them fast and furious hunters. So, with all their strength and speed, perhaps we'll see some polar bears at the winter Olympics 2026. And given their man-eater reputation, I doubt there'll be much competition! (whip cracking) Hippopotamus: another
case of adorable baby, nightmare adult, it may
surprise you that hippopotami are responsible for
around 500 human deaths throughout Africa each year. Weighing in between
3,000 and 9,900 pounds, these ultra-chunky
ungulates could easily use their sheer mass to
squish intruders to death. But it's their big ol' mouths that pose the biggest threat of all. Those extended teeth
are formidable weapons, and when you consider that their bite is substantially stronger than a lion's, at 1,800 pounds per square inch, it becomes clear how
dangerous these hippos can be! I mean, just look at the size of our skull next to a hippo's! Being enormously territorial creatures, any infringement of a hippo's
space will provoke them to attack, with some even
being known to capsize boats. Even crocodiles, who
occasionally prey on baby hippos, do so at enormous risk; as with those 20-inch
sword-like killer canine teeth serving the hippo's advantage, even a croc's tough hide
isn't guaranteed protection! Needless to say, the battle of the
hyper-aggressive big-mouths is not something you wanna
end up in the middle of. (whip cracking) Hyena: if "Lion King" taught me anything, it's that hyenas are jerks. I mean, yeah, it's just a movie, but it probably comes as no surprise that the real-world counterparts aren't always the most
pleasant of animals. Native to Africa, hyenas are
skilled carnivorous hunters who are adept at tackling large prey, such as warthogs, antelopes, wildebeests, and even the occasional
unlucky giraffe calf. Being largely pack-hunters, a cackling clan will
launch a coordinated attack on their victim, bite the hind legs, and savagely gnaw through to the innards while the poor creature is
still alive and kicking. Not a morsel of hair or bone is wasted. In fact, a group of hyenas
are able to completely devour a 400-pound zebra in just 25 minutes, with late-comers using
their huge jaw muscles and sharp teeth to pulverize
the remaining bones. What's more, hyenas aren't
above stealing chunks of other animals' kills, using
a relentless, albeit risky, group tactic of nipping
at the legs of predators like lions to drive them
away from downed prey. Their aggression isn't just reserved for other species, though. Male hyenas face intense domination by the women of the pack, and must submit to the pecking order, or risk violent punishment
from the alpha female. At a family carcass dinner,
the males are made to eat last; even the female cubs get their
nibble on before their pops. As a result, a male
hyena will often head out on hyper-aggressive solo
hunts and ravenously tear into his meal as quickly as possible, before his female
pack-mates can catch a whiff and force him off his own kill. So, if you want to experience a violently matriarchal society in action, simply offer yourself up
as food for a male hyena and see what happens. Now that's what I call radical feminism! (whip cracking) Bull shark: while certainly rare, around 80 shark attacks occur every year. The frontrunners responsible
for these are the great white, tiger shark, and perhaps
the most dangerous of all, the bull shark. Reaching lengths of 11 feet and weighing as much as 700 pounds, the bull shark is certainly sizable, and with their stocky
midriff and pointed features, have the intimidation factor to match. These fierce predators
hunt almost anything that crosses their waters, from invertebrates and
smaller fish, to other sharks! Their aggression is best exemplified in one of their most
distinctive hunting techniques: the old bump-'n'-bite routine. They quite literally charge
at their prey like a bull, ramming it as a way to
debilitate it before tucking in. With 50 rows of teeth, accumulating a grand total of
around 350 serrated chompers, evolved to tear through flesh like butter, the bull shark will
then rip its prey apart. Due to their ability to
swim in shallow, brackish, salt and freshwater, bull sharks are often in much closer proximity to us humans than most other sharks,
making them a bigger threat. This is especially true if
you're thrashing around. Indeed, thrashing of any kind triggers a shark's instincts to hunt, as this behavior usually
indicates a wounded animal, and hence, an easier kill. And while they can and will attack, they don't tend to have
an appetite for humans. As they chomp into us, they soon realize we're
not their desired prey, and replace the old bump-'n'-bite routine with the classic dine-'n'-dash. Which is good news, right? Well, with a formidable
6,000-newton force bite, the bull shark's bite is
considered one of the strongest, meaning even a nibble can leave
a human seriously injured, if not lifeless. Which, all things considered, shows just how lucky the
guy in this clip really is. - [Man 1] Come on, bro. Yo, yo, yo, look.
- It's a big catfish, brah. - [Man 1] Yo, look at the
blow right next to you. - [Narrator] After a close
shave like that, if it were me, you can bet I'd be hanging
up my flippers for life! (whip cracking) Silverback gorilla: ah, the
noble male silverback gorilla. While these hulking
apes are powerful enough to peel a tree like a banana, or shatter your skull with one swing, they're also big-time family men. As wholesome as that sounds,
it's seriously bad news if you pose a perceived
threat to their family. If, for example, another
silverback competitively charges onto big daddy's turf, he'll typically throw the intruder off with an angry fake charge, giving enough time for his
family to safely escape. If that doesn't work, standing upright, big poppa might roar terrifyingly and throw whatever he
finds off the forest floor at his enemy. And if that's still no good,
he'll go for the big time: lunging forward, lashing out
with bone-shattering punches and digging his long, sharp canines into the intruder's flesh. Needless to say, an attack like that can cause deep, gaping
injuries, and even death, occasionally even to
the fiercest predators of the East-African mountainous terrain most of them call home. However, despite their aggression, there's one thing that stops gorillas from being one of the
toughest animals out there: they typically max out
at around 5 feet tall. What that means is, up against something like
a large grizzly bear, for which a head-and-body length of 9 plus feet isn't terribly uncommon, the much larger bear has a lot
more weight to throw around. Not to mention those huge paws and claws, which have been known
to decapitate a moose in a single strike! While a gorilla could no doubt
deliver some nasty bruising, intimidation, and painful bites, their natural fighting
tools are largely evolved to fight other gorillas, rather than enormous, bulky predators. What's more, gorillas often
fall prey to leopards, which are much smaller
than a full-grown grizzly. Of course, the territories
of grizzly bears and gorillas don't overlap, so
gorillas don't have to worry about this matchup in reality. However, it demonstrates
a pretty important point: that flat-out aggression
doesn't always win out against sheer predatory
efficiency and strength. As much as the honey badger may try! Even so, among rival gorillas,
it pays to be aggressive, seeing as the best man gets first dibs on the local ladies from
any group they dominate. So, for the guys out there
who enjoy a barroom brawl, you might want to consider
reincarnation as a gorilla in the next life; that way,
you might finally find love! What aggressive animals would
you least like to encounter? Can you think of any I
didn't get time to cover? Wolverines, I'm looking at you! Let me know what you think
down in the comments below, and thanks for watching! (upbeat music)
