Buzz
Anyone who has lived with a dog, cat, or other animals knows just how extraordinary their abilities can be. A dog's sense of smell, for example, can detect scents that are invisible to humans, while a cat's exceptional balance and agility outpace even the most skilled acrobats or gymnasts. Even animals not commonly kept as pets show remarkable abilities such as hibernation, using sonar for navigation, walking on water, and delivering potent electrical shocks to catch prey or ward off danger. These are just a few examples of the incredible powers that animals possess, as evidenced by the 10 recently uncovered abilities on this list.
10. Heat Detection via Smell
Dogs boast an extraordinary sense of smell, with their noses being "up to one hundred times more sensitive" than those of humans. Remarkably, they can even detect radiation, specifically thermal radiation or heat, even when it is "weak." Their ability to sense body heat proves invaluable, especially when their sight, hearing, or smell starts to decline. This allows them to continue hunting, even when their other senses may not be as sharp. Ethologist Marc Bekoff, professor emeritus at the University of Colorado, Boulder, is so astounded by this discovery that he deems it "fascinating."
While other animals, such as black fire beetles, certain snakes, and the common vampire bat, are known to use heat detection, no one had realized that dogs could do the same. Scientists were curious about whether the moist, cool skin on the tips of dogs' noses could help them detect heat. To test this theory, they exposed dogs to various sources of thermal radiation while undergoing an MRI scan. The results confirmed that dogs can indeed sense "weak hot spots" with their noses.
9. Magnetoreception
Dogs' incredible ability to detect heat is just one of the many remarkable powers that scientists have recently uncovered. For a long time, it’s been known that certain animals, including birds, salamanders, and frogs, can navigate by sensing the Earth's "weak magnetic field." This ability is referred to as magnetoreception. Now, it turns out that dogs, too, have this sense, confirming what many researchers had long suspected. Though the exact mechanism behind this is still unclear, it is now known that dogs can indeed sense the Earth's magnetic field. "I’m really quite impressed with the data," said biologist Catherine Lohmann.
Dogs use this extraordinary skill to help them find new paths when exploring unfamiliar areas, a trait that aids in their hunting abilities. It's likely that their magnetoreception also plays a role in other tasks, though further research is needed to fully understand this discovery. One thing is for sure: more insights are on the way, and this discovery will likely lead to even more fascinating findings.
8. Surviving Without Oxygen
It’s incredibly small. It resides within the muscle tissue of salmon, but what’s most remarkable about this organism isn't its size or habitat. The most amazing feature of the 10-celled Henneguya salminicola (H. salminicola) is its ability to survive without oxygen—a feat no other known animal can achieve. This parasite is the only animal known to live without relying on oxygen, a vital element for every other form of life on Earth. Dorothée Huchon, a zoologist at Tel Aviv University in Israel, expressed astonishment at this discovery, noting, "Aerobic respiration is a major source of energy, and yet we found an animal that gave up this critical pathway."
The absence of mitochondrial DNA in the structure of this parasite suggests it doesn't require the genes essential for respiration, as these genes are typically found within mitochondrial DNA. The missing genes reveal that H. salminicola cannot carry out aerobic cellular respiration. In simpler terms, it survives without oxygen. While the exact method the parasite uses to accomplish this feat remains a mystery, zoologist Dorothée Huchon suggests that it might derive energy from the host’s cells. Alternatively, Huchon speculates that the parasite might utilize an oxygen-free respiration process. Huchon also points out that it’s traditionally believed that organisms evolve to become more complex, with simple, single-celled organisms being the ancestors of more intricate life forms. However, H. salminicola presents an exception to this rule, with its evolutionary process seemingly defying the conventional path.
7. 'Lasso Locomotion'
Some species of snakes possess a strange yet intriguing ability to ‘climb’ trees using a technique called ‘lasso locomotion.’ Brown snakes, which were originally brought from Australia, Papua New Guinea, and the Pacific Islands aboard cargo ships during World War II, have become a significant problem in Guam. These invasive reptiles have caused the extinction of ten local bird species. In response, island residents have devised various strategies to combat them, such as air-dropping drug-laced mice for the snakes to consume and using dogs to hunt them. Unfortunately, these efforts have been unsuccessful.
Birds are particularly vulnerable to the snakes’ attacks, as these brown snakes dwell in trees. To safeguard the birds, ecologists Julie Savidge and Tom Seibert from Colorado State University recommended installing smooth metal poles at the bases of bird nesting boxes. The idea was that the snakes wouldn’t be able to climb such slick surfaces, thus protecting the birds. However, the snakes managed to surprise them. Footage from on-site video cameras revealed the snakes twisting their bodies around the poles like lassos and then wriggling their way upward. Seibert commented, "We just kind of looked at each other in shock. I mean, this wasn’t something a snake was supposed to be able to do." This newly discovered ability of the snakes adds a fifth type of locomotion to their existing repertoire of movement methods: lasso locomotion, joining slithering, rectilinear movement, lateral undulation, and concertina locomotion.
6. Empathy
Like many other species, rodents are social creatures. They live in groups and rely on one another for survival. But do they also experience each other’s pain? Can they feel empathy? This is what a group of researchers aimed to discover. Defining empathy as "the ability to understand and share the feelings of others in their group," the team designed an experiment to explore this possibility. They divided the mice into three groups, each subjected to a different form of stress: one group had their tails pinched, another was injected with formalin, and the third was anesthetized.
"The test mice in this study could... reliably determine that the treated mouse was in pain by using visual cues," the team reported in their article in the Brain and Behavior journal. The mice that empathized with their distressed cage-mates displayed empathetic behavior by showing "no heightened interest in anesthetized conspecifics or conspecifics with swollen limbs," but they did show interest in the formalin-injected conspecifics. It was less certain whether "stranger mice" shared the same empathy for the distressed individuals.
5. Shape-shifting
The mutable rain frog, first discovered in the rainforests of Ecuador in 2006, wasn’t known for its remarkable shape-shifting ability until years later when a second specimen of the species was found. This frog can alter the texture of its skin from rough and spiny to smooth in mere minutes. One researcher, upon catching the frog to photograph it, thought she had mistakenly caught a different species. When they later returned it to its natural environment, the researchers placed some moss in its container, only to find that the frog had reverted back to its rough texture.
A series of photographs taken over different intervals—90 seconds, 150 seconds, 180 seconds, 270 seconds, and 330 seconds—show the mutable rain frog at various stages. Within just three minutes, it could be mistaken for another frog. By five and a half minutes, it would likely be unrecognizable as the same creature.
The researchers were even more astounded when they discovered that another frog species, the Sobetes robber frog, possessed the same incredible ability. This has led scientists to believe that many other amphibian species may also have the capacity to alter their shapes.
4. Brainless Learning
It’s yellow—or sometimes yellowish—and can resemble a plant at times. Other instances see it looking like a mushroom, and in some cases, it might even be confused with mucus. The identity of this strange entity remains a mystery. Scientists are still unsure if 'The Blob,' as it is currently known, is an animal or a fungus. Discovered at the Paris Zoological Park in France, this bizarre life form appears to be 'fungus-like' in appearance but behaves like an animal. Some of its most remarkable features include '720 sexes,' the ability to 'move without legs or wings,' and the ability to heal itself in just two minutes if cut in half.
Unsurprisingly, Bruno David, the zoo’s director, is fascinated by The Blob, particularly because 'it has no brain but can still learn.' It can navigate through a maze to find food or avoid a salt line, which it strongly dislikes. When food lies beyond a 'salt barrier,' The Blob will figure out how to bypass the salt line more efficiently than usual. Even more impressive is the fact that when two blobs are combined, the one with the learned behavior will transfer its knowledge to the other. The Blob was named after the alien entity in the science fiction-horror film, The Blob, starring Steve McQueen. Much like its cinematic counterpart, The Blob has an insatiable appetite, consuming everything in its path during its rampage in a small Pennsylvania town.
3. Time Measurement
Animals have an innate sense of time. When waiting, a recently discovered set of neurons activates, functioning like a clock. Daniel Dombeck, the lead researcher at Northwestern University, explained that his team's findings reveal that dogs, like other animals, have a specific 'representation of time' in their brains, allowing them to measure intervals. This explains how pet dogs can tell if their owners are late in feeding them.
Dombeck's understanding that the temporal lobe of the brain 'encodes spatial information in episodic memories' led him to propose that it may also be responsible for encoding time. As James Heys, a postdoctoral fellow in Dombeck’s lab, clarified, every memory contains two key elements: 'space and time,' because memories always occur 'in a particular environment and are structured within a timeline.'
To test this theory, Dombeck and his team created a virtual reality treadmill, where a mouse ran down a hallway to a door located halfway down the track. Six seconds after the mouse reached the door, it opened, granting the rodent a reward. Later, the physical door was replaced with an 'invisible door' in the virtual reality scenario. Despite the new cues signaling the door’s location, the mouse still waited six seconds before proceeding to claim its reward.
With the mouse connected to a brain imaging device, Dombeck and his team tracked its brain activity. They discovered that neurons responsible for 'spatial encoding' fired as the mouse approached the invisible door but deactivated when it arrived. Instead, a new set of 'timing' cells were activated. 'This was a huge surprise and a groundbreaking discovery,' Dombeck stated. One possible future application of this research, he noted, could involve 'early detection tests for Alzheimer’s,' where individuals suspected of having the disease might be asked to 'estimate how much time has passed or navigate a virtual reality environment.'
2. Super Taste
Taste buds are fascinating sensory organs. These clusters of specialized cells are responsible for detecting the flavors of everything, from the sweetness of vanilla ice cream to the bitterness of olives. Surprisingly, they are not as fully understood as once believed. The discovery of how taste buds function in mice is changing the way scientists approach the concept of taste and how these cells identify different flavors.
There are five primary taste categories: bitter, sweet, salty, sour, and umami (a savory flavor). For years, scientists thought that taste buds could only detect one or two flavors, with research suggesting that taste cells responded to only specific compounds. For instance, certain cells might detect sweet sucralose or bitter caffeine but not both. However, thanks to the study of mice taste buds, this view has become more nuanced and complex.
In a study by neurophysiologist Debarghya Dutta Banik and his team, when specific taste cells were removed from the taste buds of mice, the remaining cells responded to a variety of different flavors. When presented with a selection of compounds, researchers discovered that the mice possessed a group of cells that could detect multiple chemicals across various flavor categories. To complicate things further, the brain’s role in taste perception was revealed. Without a crucial protein necessary for these versatile taste cells to communicate information, the brain didn’t receive the flavor signals, causing the mice to consume bitter solutions, even though they typically dislike such flavors.
As Kathryn Medler, a neurophysiologist at the University at Buffalo in New York, explains, the sense of taste is essential for survival. Without it, food would become less appealing, leading to reduced consumption and potential malnutrition. Taste also serves another protective function: it helps people avoid spoiled or toxic foods, as they usually taste unpleasant. The fact that taste functions similarly in both mice and humans opens the possibility that individuals who lose their sense of taste, such as due to chemotherapy, might have it restored.
1. Survival Genes
Tardigrades, though incredibly tiny, are astonishingly resilient. Known as 'water bears,' these creatures can withstand extreme conditions that would obliterate animals far larger than themselves, including humans. Their remarkable toughness is attributed to unique 'survival genes.' One particularly hardy species, Ramazzottius variornatus, is often regarded as the most resilient and robust within the tardigrade family.
A breakthrough discovery by geneticist Takekazu Kunieda and his team at the University of Tokyo uncovered one of the tardigrade’s most incredible survival secrets. These tiny creatures have evolved a unique protein that shields their DNA from radiation damage. Known for thriving in extreme environments, they can survive conditions like freezing, total dehydration, and even the vacuum of space. Remarkably, scientists were able to revive a tardigrade that had been frozen solid for over three decades, setting a new survival record for this species.
For a long time, it was believed that tardigrades didn’t develop their extraordinary survival traits on their own, but rather received assistance through external sources. Researchers at the University of North Carolina at Chapel Hill found that 17.5% of the tardigrade genome originated from other organisms, including plants, fungi, bacteria, and viruses, through a process known as horizontal gene transfer. However, recent findings from Japanese scientists challenge this view, suggesting that the tardigrades' incredible abilities are likely inherent and 'proprietary,' rather than a result of gene transfer. This raises intriguing possibilities for medical and genetic research applications.
