25 Most Aggressive Animals

Posted by , Updated on May 22, 2024

Do you think humans are the ones frightening animals? It’s time to rethink that notion. Certain animals, although appearing harmless initially, can turn extremely aggressive when agitated. The creatures we’re discussing today are not only ready to attack but are also fearless around humans. So, be cautious as we present the top 25 Most Aggressive Animals!



CassowariesSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Southern_Cassowary_7071.jpg

Just watching these birds stalk their prey will really open your eyes to the whole birds = dinosaurs thing.


Saltwater Crocodile

Saltwater CrocodileSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Saltwater_crocodile.jpg

Let’s just say you don’t need to provoke these guys to attack you. Though a two meter croc won’t eat you, a four meter one just might.


Wedge Tailed Eagles

Wedge Tailed EaglesSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Aquila_audax_-_Captain's_Flat.jpg

They have no natural predators and like many other animals on this list they don’t register fear. Furthermore they have been known to viciously attack drones and other man-made objects.



MooseSource: wikipedia, Image: https://pixabay.com/en/elk-deer-wildlife-antlers-nature-50296/

While a deer will run away, a moose will stick around and fight. And probably win.



WaspsSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Wasp_August_2007-3.jpg

They are the psychopaths of the animal kingdom. Don’t mess with wasps.



GeeseSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Canada_Geese_at_Marymoor_Park.jpg

They look nice and friendly, but they’re not. While other birds will fly off when frightened, a goose will take any threat as a challenge.



EmusSource: wikipedia, Image: https://pixabay.com/en/photos/emu/?image_type=photo

There was even a war against Emus. Long story short…humans lost. (seriously, look up the Emu Wars, there were actually two of them)


Killer Whales

Killer WhalesSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Orca_porpoising.jpg

Not only are these guys brutal, they’re frighteningly smart. They fear nothing and the way they hunt, track, and kill their prey borders on genius.


Honey badgers

Honey badgersSource: wikipedia, Image: https://www.flickr.com/photos/47456200@N04/4362649552

These little guys are incredibly fierce. In fact, they will deliberately instigate fights with much bigger animals (like lions) just for the fun of it. On top of that they are extremely smart. As one of the few animals capable of using tools, many zoos won’t even keep them. They are simply too good at escaping and too much of a threat when they do.



JellyfishSource: wikipedia, Image: https://pixabay.com/en/jelly-fish-aquarium-jelly-jellyfish-1288736/

They don’t have a brain and they are more than capable of killing you. Oh yea, and some are basically immortal.



RaccoonsSource: wikipedia, Image: https://pixabay.com/en/raccoon-animal-wild-view-forest-1476504/

They may be nervous at first, but after they realize you’re not going to steal their food they get really bold.



FerretsSource: wikipedia, Image: https://www.flickr.com/photos/usfwsmtnprairie/5244705122

They might back up hissing when you get close but that’s not because it’s afraid of you. It’s because it’s just trying to buy a few seconds before it figures out the quickest way to kill you.



KangaroosSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:RedRoo.JPG

They look friendly and cute. They’re not. They’ll kick you, drown you, and eviscerate you. No joke. They will tear you up in a very literal sense.


Bantam roosters

Bantam roostersSource: wikipedia, Image: http://www.publicdomainpictures.net/view-image.php?image=114080&picture=bantam-cochin-rooster

Although roosters in general are quite fearless, bantam roosters just take things to another level.



WolverinesSource: wikipedia

They are the American equivalent of the honey badger and they are just as violent. There is even a case of a wolverine killing a polar bear in a zoo.


Big cats

Big catsSource: wikipedia, Image: https://pixabay.com/en/lion-portrait-animal-portrait-face-617365/

This depends somewhat. While cheetahs can be quite skittish, some lions and tigers are downright ferocious. There are numerous cases of Indian and African villagers being dragged off into the night never to be heard from again.



CottonmouthsSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Cottonmouths_(12676254723).jpg

Unlike rattlesnakes, cottonmouths won’t warn you before attacking. They just attack.



HornetsSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Hornet-vespa.jpg

Some species of hornets are even carnivorous and eat other wasps and bees



HipposSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Hippo_at_dawn.jpg

They kill more humans per year in Africa than any other mammal (apart from humans).



BisonSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Bison_main.jpg

Although they won’t indiscriminately attack you like some animals on this list, bison do not show fear. They are big, all of them have horns, and they will use them to shred you to pieces if you don’t steer clear.


Bull sharks

Bull sharksSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Bullshark.JPG

It’s not the Great Whites you should be afraid of. It’s the bulls. They’ll eat anything and they’re extremely territorial. They can also survive for extended periods of time in fresh water.



TriggerfishSource: wikipedia, Image: https://www.flickr.com/photos/volvob12b/11111536093

Of all the animals on our list, these guys have one of the worst tempers. Combine that with an almost ridiculous sense of territoriality and you have a vicious little beast on your hands.


Funnel web spiders

Funnel web spidersSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:CSIRO_ScienceImage_2226_A_Female_Funnel_Web_Spider.jpg

This is Australia’s answer to the arachnid world. These guys have enough venom to kill you and the disposition to not give it a second thought.


Polar bears

Polar bearsSource: wikipedia, Image: https://www.flickr.com/photos/npsclimatechange/23085163652

If you are out on the ice and see a polar bear, it’s too late. He’s already been stalking you for hours. As they say about bears, if it’s black…attack. If it’s brown…stay down. If it’s white…good night.



taipanSource: wikipedia, Image: https://commons.wikimedia.org/wiki/File:Coastal-Taipan.jpg

The world’s most venomous snake also happens to be one of the most aggressive creatures on the planet. If you go to Australia, be cautious. Conventional stomping wisdom won’t work on these guys. They don’t feel fear. It’s not in their repertoire.