Fact: You don’t want to tango with Mother Nature. The world at large is full of ferocious creatures that, if crossed, can dish out some serious damage at the blink of an eye. And sure, humans have developed high-tech weaponry and reinforced protective gear.

We’ve refined martial arts and hand-to-hand combat to unimaginably lethal levels. But even if you’re equipped with all that and more, if you know what’s good for you, you’d still best steer clear of the world’s toughest animals. Or better yet, make like a (much) weaker creature: Turn tail and run!

Honey Badger

These goofy weasel-like creature—best known for being the subject of a viral video—truly, as said video vulgarly suggests, don’t care. They’re notorious for their fearlessness, and go after animals either far larger or far more venomous (such as the cobra), then use their power jaws and sharp teeth to bring down prey, eating every last bit once they do.

For example: here are honey badgers taking on six lions. They don’t always win, but they also don’t care—and as such will fight to the death.

Wolverine

There’s a reason Marvel based one of its toughest superheroes on this animal. It might not look like much, at just 20 to 50 pounds, but they unquestionably punch above their weight, going not only after squirrels and beavers but bison, moose, and full-grown deer, killing animals many times their size.

Deathstalker Scorpion

Considered the “world’s most lethal scorpion,” the deathstalker more than earns its name. Not only is its poison dangerous for adults and deadly for children and older people, but it moves startlingly fast, too—at about 130 centimeters per second. Watch out for these small but stealthy creatures when in Northern and East Africa (and, if somehow you do run into them in the United States, be warned: the anti-venom to combat their poison has yet to be approved by the FDA here).

Grey Wolf

Perhaps the only creature tough enough to match Liam Neeson on a bad day, the grey wolf is tough on its own and all-but inescapable when encountered in a pack. It can handle temperatures at -40 degrees and can move at almost 40 mph. Its bite can be as strong as 1,500 pounds per square inch. And you can bet that, if you encounter a whole pack, you won’t be getting bit just once.

Black Mamba

Not only is this reptile lethally venomous, it can also grow up to 14 feet long, making it Africa’s longest venomous snake—and a fast-moving one at that (it can move at speeds of 12.5 miles an hour). Their name refers not to their skin color (which tends to be gray) but the inside of their mouths, which is more of a blue-black color. If you see the inside of their mouths, it may be too late: these animals inject a huge amount of nuero- and cardiotoxin each time they strike, causing death within 20 minutes.

Heck Cows

You’re probably thinking, “Cows?” But these aren’t just any cows—they’re a particular species bio-engineered by German zoologists Heinz and Lutz Heck who were aiming to recreate a extinct wild ox breed (known as aurochs) that were a staple of the region’s mythology.

They managed to create an aggressive and uniquely shaped species that came to be known as the Heck cow, and became a feature of Nazi pride and propaganda. These cows still roam freely around Bavaria and could cause some serious pain to someone foolish enough to annoy them.

Spotted Hyenas

These carnivores are likely to have the last laugh in an unexpected encounter with a person. They have a bite with a force of 1,000 pounds per square inch and, when they attack, they go for the face, neck, and spine, inflicting damage to soft tissue and internal organs as they go.

Though they generally stay away from humans, they do occasionally make their way into urban areas and cause plenty of problems for those who encounter them.

Slow Loris

This nocturnal primate has big eyes and long limbs that make it an adorable inspiration for a stuffed animal. But watch out when it drops an elbow: These animals have toxin-producing glands in their upper arms, which they then lick, filling their mouth with poison, before biting their prey.

Only small animals have actually died from the bites, but at least one researcher has been sent to the hospital after a loris attack.

Wild Boar

These aggressive, portly-but-fast-moving animals are fierce and come equipped with razor-sharp tusks, but what’s perhaps most dangerous about them is the environmental destruction they cause. “I’ve never seen any one species that can affect so many livelihoods and resources,” Michael Bodenchuk, the state director of Texas Wildlife Services, told Scientific American. The USDA is spending $20 million to try and slow the spread of these animals, who have spread to 39 states and are only proliferating further.