CLOSE

7 Absolutely Insane Animal Defense Mechanisms

In 2012, scientists recorded footage of a never-before-seen defense mechanism deployed by a small species of deep-sea squid: When threatened, the squid attacks its predator and then pulls away, breaking off the tip of its own arm and leaving it behind as a distraction. The arm continues to glow and twitch, creating a diversion and enabling the squid to escape.

But this squid isn't the only creature with a bizarre way of defending itself. Here are several other ways animals try to save their own lives, or the lives of their comrades.

1. The Lizard That Shoots Blood From Its Eyes

The Texas Horned Lizard is a scary-looking creature. Brown, plump and perfectly camouflaged in its native sandy environment, its first line of defense is its spiky demeanor. If the sharp spikes and horns don't ward off predators, the lizard steps it up a notch and squirts a well-aimed stream of blood out of its eyes. The stream of blood, which can go as far as 5 feet, is mixed with a foul-tasting chemical that wards off predators. But this odd weapon comes at a cost: The lizard may release a third of its total blood supply this way, amounting to two percent of its body mass.

2. The Hairy Frog That Breaks Its Own Bones

Image credit: Blackburn/New Scientist

What if every time you felt threatened, your first and only method of defense was to break your own bones and use them for weapons? Meet the hairy frog, a Central African species that, despite its name and fuzzy appearance, isn't hairy at all. When breeding, the male frogs develop thin strands of skin along the sides of their bodies that resemble hair. These strands also, in theory, allow the frogs to take in more oxygen while they watch over their eggs. But what's really compelling about this frog is its ability to crack its own toe bones and push them through their skin to form sharp claws, great for warding off would-be attackers.

While it's not completely clear what happens to the bones after the threat of attack subsides, researchers believe the bones slide back under the skin when the frog's muscles relax.

3. The Newt That Turns Its Ribs Into Spikes

Image credit: Peter Galaxy/Wikimedia Commons

The hairy frog isn't the only amphibian that uses its bones for weapons. When attacked, the Spanish ribbed newt shifts its ribs forward at an angle and pushes them through its stretched skin. The resulting effect is a row of spikes on either side of its body. Like the hairy frog, the newt has to force the bones through its skin every time it is attacked, but the mechanism seems to cause little or no harm to the creature. "Newts, and amphibians in general, are known to have an extraordinary ability to repair their skin," says zoologist Egon Heiss of the University of Vienna in Austria.

4. The Termites That Blow Themselves Up

Image credit: R. Hanus/Nature

Talk about taking one for the team. When under attack, a species of termites found in the French Guiana rain forests sends older worker bugs on suicide missions to defend the whole colony. These older bugs, no longer as useful to the pack as they once were, come equipped with "explosive backpacks" that, over a lifetime, fill with toxic crystals produced by glands in the abdomen. When mixed with salivary gland secretions, these crystals create a toxic liquid that explodes on enemies, paralyzing them and killing the worker at the same time.

5. The Hagfish That Slimes Its Enemies

Hagfish are eel-shaped marine animals with the incredibly useful ability to slime their enemies. When threatened, the hagfish emit a slime from their pores that, when mixed with water, expands into a gelatinous goo that can either trap predators or suffocate them by clogging their gills. The video above shows hagfish being attacked 14 separate times by sharks and other big fish, and coming out completely unharmed. Each predator took one bite before immediately spitting the hagfish out and swimming away, gagging. "The hagfish, uninjured and oblivious, just carried on feeding. Its defence is so effective that it can totally ignore the fact that a shark just tried to bite it," says Discover Magazine.

6. The Sea Cucumber That Shoots Organs Out of Its Anus

Sea cucumbers can seem pretty boring. There are some 1,250 known species of these sedentary creatures in the world, and many of them do indeed look like cucumbers. But when it comes to survival, things get interesting. Like starfish and sea urchins, sea cucumbers are echinoderms, and they can regenerate lost body parts if necessary. This comes in handy when they're threatened. The sea cucumber will expel their internal organs, which are sticky and sometimes contain a toxic chemical that can kill predators.

7. The Opossum That Plays...Well, You Know

You can't do a roundup like this without at least mentioning the opossum. We typically refer to this creature's infamous defense mechanism as "playing dead," but there's actually nothing playful about it; the act is completely involuntary. Under intense fear, opossums fall into a comatose-like state that can last for hours, long enough to convince any predator that the opossum is already dead. Also unappetizing: Fear causes these animals to emit a corpse-like smell that only adds to their act.

This story originally appeared last year.

nextArticle.image_alt|e
Disney/Marvel
arrow
entertainment
The 10 Best Sci-Fi Movies on Netflix Right Now
Disney/Marvel
Disney/Marvel

If you’re in the mood for some speculative fiction and your pile of Arthur C. Clarke books has been exhausted, you could do worse than to tune in to Netflix. The streaming service is constantly acquiring new films in the sci-fi and fantasy genres that should satisfy most fans of alternative futures. Here are five of the best sci-fi movies on Netflix right now.

1. CUBE (1997)

This low-budget independent film may have helped inspire the current "escape room" attraction fad. Six strangers wake up in a strange room that leads only to other rooms—all of them equipped with increasingly sadistic ways of murdering occupants.

2. METROPOLIS (1927)

Inspiring everything from Star Wars to Lady Gaga, Fritz Lang’s silent epic about a revolt among the oppressed people who help power an upper-class city remains just as visually impressive today as it did nearly 100 years ago.

3. TROLL HUNTER (2010)

A Norwegian fairy tale with bite, Troll Hunter follows college-aged filmmakers who convince a bear trapper to take them along on his exploits. But the trapper fails to disclose one crucial detail: He hunts towering, aggressive trolls.

4. NEXT (2007)

Nic Cage stars a a magician who can see a few minutes into the future. He's looking to profit with the skill: the FBI and others are looking to exploit it.

5. THE HOST (2006)

A slow-burn monster movie from South Korea, The Host has plenty of tense scenes coupled with a message about environmental action: The river-dwelling beast who stalks a waterfront town is the product of chemical dumping.  

6. GUARDIANS OF THE GALAXY VOLUME 2 (2017)

Marvel's tale of a misfit band of space jockeys was a surprise hit in 2014. The sequel offers more Groot, more Rocket Raccoon, and the addition of Kurt Russell as a human manifestation of an entire sentient planet.

7. STARDUST (2007)

Director Matthew Vaughn's adaptation of the Neil Gaiman novel features Michelle Pfeiffer and Robert De Niro as supporting players in the tale of a man (a pre-Daredevil Charlie Cox) in search of a fallen star to gift to his love.

8. KING KONG (2005)

Director Peter Jackson (The Lord of the Rings) set his considerable sights on a remake of the 1933 classic, with the title gorilla pestered and exploited by opportunistic humans.

9. DONNIE DARKO (2001)

What will a teenage mope do when a giant rabbit tells him the world is about to end? The answer comes in this critical and cult hit, which drew attention for its moody cinematography and an arresting performance by a then-unknown Jake Gyllenhaal.  

10. ROGUE ONE: A STAR WARS STORY (2016)

Soon we'll have a movie for every single major or minor incident ever depicted in the Star Wars universe. For now, we'll have to settle for this one-off that explains how the Rebel Alliance got their hands on the plans for the Death Star.

nextArticle.image_alt|e
Library and Archives Canada, Wikimedia // Public Domain
arrow
Weird
9 False Rumors With Real-Life Consequences
King Louis XV of France
King Louis XV of France
Library and Archives Canada, Wikimedia // Public Domain

Don’t believe everything you read—or everything you hear. Unverified but plausible-sounding rumors have been the basis for violent death and destruction throughout history, whether or not the stories had anything to do with the truth.

In their book A Colorful History of Popular Delusions, Robert Bartholomew and Peter Hassall describe rumors as “stories of perceived importance that lack substantiating evidence.” They also note that the sociologist Tamotsu Shibutani describes rumors as “improvised news,” which tends to spread when the demand for information exceeds supply. Such an information deficit most often occurs during wars and other crises, which might explain why some rumors have had such dramatic results. Here’s a selection of some of the most interesting rumors with real-life results collected in Bartholomew and Hassall’s book.

1. KING LOUIS XV WAS KIDNAPPING CHILDREN.

In 1750, children began disappearing from the streets of Paris. No one seemed to know why, and worried parents began rioting in the streets. In the midst of the panic, a rumor broke out that King Louis XV had become a leper and was kidnapping children so that he could bathe in their blood (at the time, bathing in the blood of children was thought by some to be an effective leprosy cure).

The rumor did have a tiny kernel of truth: Authorities were taking children away, but not to the king’s palace. A recently enacted series of ordinances designed to clear the streets of “undesirables” had led some policemen—who were paid per arrest—to overstep their authority and take any children they found on the streets to houses of detention. Fortunately, most were eventually reunited with their parents, and rumors of the king’s gruesome bathing rituals were put to rest.

2. LONDON WAS GOING TO BE DESTROYED BY AN EARTHQUAKE.

Two small earthquakes struck London at the beginning of 1761, leading to rumors that the city was due for “the big one” on April 5, 1761. Supposedly, a psychic had predicted the catastrophe. Much of the populace grew so panicked that they fled town for the day, with those who couldn’t afford fancier lodgings camping out in the fields. One soldier was so convinced of the impending doom that he ran through the streets shouting news of London’s imminent destruction; sadly, he ended up in an insane asylum a few months later.

3. JEWS WERE POISONING WELLS.

A deep well
iStock

Reports that Jews ritually sacrificed Christian children were not uncommon during the Middle Ages, but things took a particularly terrible turn during the spread of the Black Plague. In the 14th century, thousands of Jews were killed in response to rumors that Satan was protecting them from the plague in exchange for poisoning the wells of Christians. In 1321 in Guienne, France alone, an estimated 5000 Jews were burned alive for supposedly poisoning wells. Other communities expelled the Jews, or burned entire settlements to the ground. Brandenburg, Germany, even passed a law denouncing Jews for poisoning wells—which of course they weren't.

4. BRIGANDS WERE TERRORIZING THE FRENCH COUNTRYSIDE.

In July 1789, amid the widespread fear and instability on the eve of the French revolution, rumors spread that the anti-revolutionary nobility had planted brigands (robbers) to terrorize the peasants and steal their stores of food. Lights from furnaces, bonfires, and even the reflection of the setting sun were sometimes taken to be signs of brigands, with panic as the predictable result. Provincial towns and villages formed militias in response to the rumors, even though, as historian Georges Lefebvre put it, “the populace scared themselves.” In one typical incident, near Troyes on July 24, 1789, a group of brigands were supposedly spotted heading into some woods; an alarm was sounded and 3000 men gave chase. The “brigands” turned out to be a herd of cattle.

5. GERMAN-AMERICANS WERE PLOTTING SNEAK ATTACKS ON CANADA.

Officers of the Royal Canadian Mounted Police marching in a Canada Day parade
iStock

Canada entered World War I in 1914, three years before the United States did. During the gap period, rumors circulated that German-Americans sympathetic to their country of origin were planning surprise attacks on Canada. One of the worst offenders of such rumor-mongering, according to authors Bartholomew and Hassall, was British consul-general Sir Courtenay Bennett, then stationed in New York. In the early months of 1915, Bennett made “several sensational claims about a plan in which as many as 80,000 well-armed, highly trained Germans who had been drilling in Niagara Falls and Buffalo, New York, were planning to invade Canada from northwestern New York state.” Bizarre as it may sound, there was so much anxiety and suspicion during the period that Canadian Prime Minister Sir Robert Borden requested a report on the story, which the Canadian police commissioner determined to be without any foundation whatsoever.

6. THE INDONESIAN GOVERNMENT WAS HUNTING HEADS FOR CONSTRUCTION PROJECTS.

In certain parts of Indonesia, locals reportedly believe—or once did—that large-scale construction projects require human heads to keep the structures from crumbling. In 1937, one island was home to a spate of rumors saying that a tjoelik (government-sanctioned headhunter) was looking for a head to place near a local jetty construction project. Locals reported strange noises and sights, houses pelted with stones, and attacks from tjoelik wielding nooses or cowboy lassos. Similar rumors surfaced in 1979 in Indonesian Borneo, when government agents were supposedly seeking a head for a new bridge project, and in 1981 in Southern Borneo, when the government headhunters supposedly needed heads to stabilize malfunctioning equipment in nearby oil fields. Terrified townspeople began curtailing their activities so as not to be in public any longer than necessary, although the rumors eventually died down.

7. POWERFUL APHRODISIAC GUM WENT ON SALE IN THE MIDDLE EAST.

An assortment of sticks of pink bubble gum
iStock

In the mid-1990s, the Middle East was home to some alarming rumors about aphrodisiacal gum. In 1996 in Mansoura, Egypt, stories began spreading that students at the town’s university had purchased gum deliberately spiked with an aphrodisiac and were having orgies as a result. One local member of parliament said the gum had been distributed by the Israeli government as part of a plot to corrupt Egyptian youth. Mosque loudspeakers began warning people to avoid the gum, which was supposedly sold under the names “Aroma” or “Splay.” Authorities closed down some shops and made arrests, but never did find any tainted gum. Similar rumors cropped up the following year in the Gaza Strip, this time featuring a strawberry gum that turned women into prostitutes—supposedly, the better to convince them to become Shin Bet informants for the Israeli military.

8. SORCERERS WERE PLAGUING INDONESIA.

In the fall of 1998, a sorcerer scare in East Java, Indonesia, resulted in the deaths of several villagers. The country was in crisis, and while protests raged in major cities, some in the rural area of Banyuwangi began agitating for restitution for past wrongs allegedly committed by sorcerers. The head of the local district ordered authorities to move the suspected sorcerers to a safe location, a process that included a check-in at the local police station. Unfortunately, villagers took the suspects’ visits to police stations as proof of their sorcery and began killing them. Anthropologists who studied the incident said the stories of supposed sorcery—making neighbors fall sick, etc.—were based entirely on rumor and gossip.

9. OBAMA WAS INJURED BY A WHITE HOUSE EXPLOSION.

These days, rumors have advanced technology to help them travel. On April 23, 2013, a fake tweet from a hacked Associated Press account claimed that explosions at the White House had injured Barack Obama. That lone tweet caused instability on world financial markets, and the Standard and Poor’s 500 Index lost $130 billion in a short period. Fortunately, it quickly recovered. (Eagle-eyed journalists were suspicious of the tweet from the beginning, since it didn’t follow AP style of referring to the president with his title and capitalizing the word breaking.)

An earlier version of this story ran in 2015.

SECTIONS

arrow
LIVE SMARTER
More from mental floss studios