Furry instincts

When crickets stop chirping, it’s time to run: 10 animal early warnings

Image: Zoltan Fekeshazy

Long before radar and satellites, animals have relied on their sensory superpowers to detect natural disasters. From elephants hearing through the ground to ants reacting to tremors and storms in advance, many creatures exhibit behaviors that hint at impending doom—often hours or even days before it hits. Here's a list of 10 real ways animals are believed to detect and respond to natural disasters.

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Elephants can detect low-frequency seismic vibrations through their feet, known as infrasound. These sounds travel great distances through the ground, giving elephants an early warning system for earthquakes.

Field studies in Sri Lanka and Thailand have recorded elephants moving to higher ground hours before tsunamis and quakes.

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Dogs often display signs of anxiety—pacing, whining, hiding—before storms or earthquakes. In some cases, they have even alerted owners to seizures or cardiac events.

Their acute sense of smell and hearing allows them to detect subtle changes in barometric pressure and even the scent of ozone that precedes a thunderstorm. In quake-prone areas, dogs have been reported barking frantically seconds before tremors strike.

Image: Alexandre Boucey

Sharks can detect shifts in barometric pressure, allowing them to dive deeper before hurricanes strike.

In 2001, tagged bonnethead sharks in Florida were observed diving rapidly in response to Hurricane Gabrielle’s approach. Their pressure-sensitive lateral lines function like an early-warning system for dangerous storms.

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Ants have been observed to alter their foraging behavior and nest structure before earthquakes. Scientists believe they react to changes in soil gases and vibrations.

In addition to earthquakes, ants can also detect approaching storms. Changes in barometric pressure and humidity can cause ants to become more active or retreat deeper into their nests.

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As one would expect, birds are highly responsive to changes in air pressure. Many species change flight paths or stop migrating if a storm is coming.

In 2014, golden-winged warblers abruptly left Tennessee days before a deadly tornado outbreak, only returning after the threat passed. GPS trackers on some of the birds confirmed the sudden 900-mile round-trip escape.

Image: Geoff Brooks

Fish have been recorded jumping out of the water just before earthquakes, possibly reacting to pressure or specific chemical changes.

In Japan, koi and eels exhibited panic-like thrashing and leaping before the 2011 Tōhoku quake. Researchers suggest their specialized senses can detect subtle pressure waves or dissolved gas anomalies in water.

Image: Michelle Gordon

Rats often leave urban areas en masse before major flooding events. Sewer vibrations or scent cues may warn them of the incoming danger.

In India and Bangladesh, mass rat migration has historically preceded flash floods. Their survival relies on quickly identifying danger zones, and some believe their whiskers help detect water movement and even vibrations deep underground.

Image: Peter Fogden

Dolphins may be able to detect algal blooms (red tides) from miles away and often swim clear of affected areas.

Scientists believe their acute echolocation could help them sense chemical changes or detect developing dead zones. In Florida, dolphins have been observed avoiding regions impacted by Karenia brevis blooms long before any visible changes appear in the water.

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Frogs may alter their calls ahead of seismic activity, responding to low-frequency vibrations.

Researchers in Japan recorded changes in frog croaking patterns in the days before the 2011 quake. The frogs emitted less frequent and lower-pitched calls, suggesting discomfort from environmental shifts.

Image: William Warby

Crickets often go silent ahead of disasters. This curious behavior may be linked to their sensitivity to ground vibrations and air pressure changes.

Studies in Indonesia noted decreased cricket chirping before tsunamis. The silence has been proposed as a natural indicator, potentially tied to shifts in humidity or ground tension.

The truth about your brain

You won’t believe what happens in your brain while you sleep

Image: Milad Fakurian

Your brain is one of the most powerful and mysterious organs in your body. It controls everything from your thoughts to your emotions and even processes information at lightning speed. But how much do you really know about it? Some long-believed myths about the brain have been debunked, while other surprising facts reveal just how incredible this organ truly is. Get ready to be amazed by these fascinating brain facts!

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You’ve probably heard this one before, but it’s completely false! While it’s true that not all parts of the brain fire at the same time, imaging studies show that most regions are active throughout the day, even when we sleep.

Your brain is constantly working, controlling bodily functions and emotions, and processing information. So next time someone says you’re only using 10% of your brain, you can confidently tell them that’s just a myth!

Image: Aarón Blanco Tejedor

Here’s a weird fact: While your brain processes pain signals from the rest of your body, it has no pain receptors of its own. This is why surgeons can perform brain surgery on conscious patients without causing them pain.

However, the membranes and tissues surrounding the brain do have pain receptors, which is why headaches and brain injuries can be so excruciating.

Image: Usman Yousaf

How come we have headaches if the brain has no pain receptors? Well, that’s because headaches are triggered by chemical activity in the brain, changes in nerves and blood vessels, and even fluctuating serotonin levels.

In some cases, hormones like estrogen can also play a role, which explains why migraines are more common in women.

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Dreams are proof that your brain never rests! (Warning: this fact can make you feel exhausted.) While you sleep, your limbic system, that is, the part of the brain that deals with emotions, becomes especially active, which is why dreams often feel so intense.

On average, humans experience four to seven dreams per night, even if we don’t always remember them. And what about that scary nightmare about falling? Well, you can thank your amygdala, the brain’s fear center, for that one.

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Have you ever walked into a room and instantly forgotten what you were after? That’s because short-term memory only lasts about 20-30 seconds! That’s not enough!

Your brain holds a limited amount of information in its active state before deciding whether to store it or discard it. Ironically, we can’t really choose what makes the cut, but we do hope these facts stay with you!

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That sharp, icy pain when you eat something too cold? It’s your brain’s way of telling you to slow down! Officially called sphenopalatine ganglioneuralgia, a brain freeze happens when cold food or drinks rapidly chill the blood vessels in your throat, causing them to constrict and then rapidly expand. This sends pain signals to your brain, warning you of the sudden temperature shift. It’s annoying, but it’s actually your body trying to protect itself!

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You didn’t need us to tell you, but let’s look at the details: The average person has between 12,000 and 60,000 thoughts per day. What’s even more interesting? 95% of those thoughts are the same ones you had yesterday. Is that not surprising enough? Hear this out: 80% of them tend to be negative. That’s because our brains are wired for survival, constantly analyzing risks and potential dangers.

Image: Terry Vlisidis

Even though it only makes up about 2% of your body weight, your brain employs a major quantity of energy! It consumes 20% of your oxygen and blood supply, making it one of the most demanding organs in your body.

If your brain goes without oxygen for just five minutes, brain cells start dying, leading to irreversible damage. This is why deep breathing and cardiovascular exercise are great for brain health!

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Do you know that feeling when you hit the back of your head and see stars? That’s because your occipital lobe, which controls vision, is located at the back of your brain. If you get hit there, your brain momentarily misfires, causing flashes of light.

Interestingly, your brain processes vision on the opposite side; while your right brain controls your left eye, your left brain controls your right eye. It’s one of the many ways the brain operates in a complex way.

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Believe it or not, your brain generates between 12 and 25 watts of electricity when you’re awake. If you can’t really grasp how powerful that is, check this out: It’s enough to power a small light bulb! Your brain’s electrical activity is what allows neurons to send signals at speeds of up to 260 miles per hour.

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Your brain may be the fattiest organ in your body, consisting of at least 60% fat! This is why consuming healthy fats, like omega-3s and omega-6s present in fish, for example, is essential for brain health.

Healthy fats stabilize brain cell walls, reduce inflammation, and support cognitive function. So go ahead and enjoy that avocado toast, it’s food for your brain!

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It’s not just your memory that fades over time; the brain itself physically shrinks as one gets older. It continues developing until your late 40s, but after that, it slowly decreases in size.

Now, size doesn’t equal intelligence, so a smaller brain doesn’t necessarily mean a less capable one. Staying mentally active, exercising, and eating brain-boosting foods can help keep it in top shape!

Image: Lisa Yount

We often think of cholesterol as bad, but your brain actually depends on it! In fact, 25% of your body’s cholesterol is stored in your brain, where it helps with learning and memory. However, unlike other organs, the brain can’t absorb cholesterol from the blood, it has to produce its own. So, while too much cholesterol in the body can be harmful, the right amount is vital for brain function. At least you can use that as an excuse to get that burger!