What is the Weirdest Peeing Animal? The animal kingdom offers a variety of intriguing answers.
A male Amazon river dolphin can be seen lying on its back as it pees in an arc, allowing its urine to cascade near its head. This behavior is not just about competition; it serves as a rich flow of chemical information that other dolphins can detect while swimming.
Meanwhile, male porcupines mark their territory to signal to potential mates, assisting females in becoming sexually receptive. Likewise, Siberian chipmunks cleverly smear bits of snake urine on their fur, which helps them camouflage from predators.
In the grand scheme of things, despite the fascinating peeing habits across species, there can only be one ultimate champion of unusual urine production. As you might suspect, reptiles hold the title for producing solid urine.
When animals digest food, proteins and nucleic acids degrade, resulting in ammonia as a byproduct. This waste can be toxic and must be eliminated. Aquatic creatures, including most teleost fish, directly excrete ammonia into the water. In contrast, mammals convert ammonia into a less harmful substance called urea, which is then excreted in urine.
However, reptiles, insects, and birds take a different approach: they convert ammonia to uric acid. While uric acid isn’t toxic, its poor solubility in water means that their urine is often solid, semi-solid, or pasty in consistency.
Under a microscope, uric acid appears to consist of small crystals.
A 2025 survey published in the Journal of the American Chemical Society found that researchers collected urine pellets from over 20 reptile species for lab analysis. Each sample contained visible urate globules.
Reptiles don’t urinate liquid; instead, they excrete solid urate (shown left), made up of microspherical uric acid crystals (shown right) – Image credit: Journal of the American Chemical Society 2025, DOI: 10.1021/jacs/5c10139
Ball pythons, Angora pythons, and Madagascan tree boas all produce urate that forms microspheres with tiny irregularities. These microspheres range in diameter from 1 to 10 micrometers, roughly equivalent to the width of spider silk.
X-ray analysis has unveiled that each microsphere consists of even smaller nanoparticles of uric acid and water. These nanoparticles are remarkably tiny, boasting a large surface area relative to their volume, and bear a slight negative charge.
This combination enables the nanoparticles to interact with positively charged salt ions, aiding not only in regulating uric acid levels in these animals but also in maintaining salt balance. This adaptation likely evolved to help reptiles and other species in arid habitats conserve precious water resources.
Interestingly, humans produce small amounts of uric acid as well, which can accumulate. Excess can lead to complications in the urinary tract, such as kidney stones, or in the joints, causing gout.
Investigating how reptiles process uric acid could pave the way for treatments for related human health issues in the future.
So while the urinary habits of baby reptiles may seem odd by human standards, they serve a purpose—and one day, we might all be thankful for these evolutionary developments.
This article addresses the curious question posed by Brendan Wood from Leicester: “What is the weirdest peeing animal?”
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The most effective inventions address everyday challenges with a hint of flair and efficiency. However, that’s not always the case. Some inventions appear bizarre as they tackle nonexistent problems or approach solutions in unconventional ways.
Featured Case: From brain-powered cat ears to dazzling car tires, here are ten truly peculiar items, including several strange hats. Let’s kick things off…
1. Cat Mimi
Journalists wearing headsets with cat ears called “Cat Mimi.” The ears respond to a brain wave analysis interface, moving as a form of nonverbal communication. Photo by Yoshikazu Tsuno/AFP/Getty Images
In 2011, the inventor merged Japanese technology with a playful animal-themed accessory, resulting in Nekomimi—cat ears that move based on the user’s brain waves. Concentration powers the ears, while a relaxed state causes them to drop.
Despite its oddity, this gadget is a hit among cosplayers and can be found in Japan for around £90.
2. Mono-Wheel Bike
The Dynasphere, a mono-wheeled vehicle, was tested in Breen Sands, Weston Supermare, England, in February 1932. Photo: Fox Photos/Hulton Archive/Getty Images
Cars and motorcycles are iconic inventions, but had the Dynasphere gained popularity, the landscape of vehicles might have been very different.
This mono-wheeled vehicle could reach speeds of up to 48 km/h and was available with either a gasoline engine or an experimental electric motor.
However, safety concerns were paramount. Standing 3 meters tall, it was difficult to steer and prone to “gerbilling,” where the driver could be spun around like a rodent in a wheel.
3. Tomatan
Kagome employee Suzukijima prepares to eat tomatoes served by the Tomatan, a promotional tomato dispenser for marathon runners. Photo by Yoshikazu Tsuno/AFP/Getty Images
Who hasn’t dreamed of being fed by a robot? Well, maybe not many of us.
Nonetheless, Japanese juice maker Kagome envisioned this concept, allowing marathon runners to eat tomatoes on the go. Unfortunately, it was just a prototype and not for sale—how unfortunate!
4. Glowing Tires
In this 1961 archive image, a woman adjusts her stockings with light from a Goodyear lighted tire. Photo: Douglas Miller/Getty Images
In the ’60s, Goodyear had a fascinating idea: illuminating tires! These were crafted from synthetic rubber and featured bulbs within the wheels, making them glow.
While they offered a range of colors and looked stunning in the dark, their performance in wet conditions was lacking. They also tended to melt under heavy braking, leading to abandonment of the concept.
5. Hayfever Hat
Kawasaki Ken, founder of the International Chindog Association, showcases his creation, the “Hayfever Hat,” in Tokyo on June 3, 2009.
Kawasaki Ken is renowned for quirky inventions, coining the term “Chindogu,” meaning “strange tool,” and has created hundreds of unusual items, including mini shoe umbrellas and eye-drop funnels.
Next on the list is the “Hayfever Hat,” designed to dispense paper continuously to combat sneezing caused by allergies. While it seems odd, it offers a unique solution to a persistent problem.
6. Bed Glasses
A woman demonstrates Hamblin glasses, designed for comfortable reading in bed, captured in 1936.
Hamblin’s reading glasses enable users to read while lying down. Featuring a mirror system like a periscope, they allow reading at a 45-degree angle. They also double as a tool for checking your feet while walking.
7. Cat Meow Machine
The mechanical cat meowed 10 times per minute while lighting up. Photos by Keystone/Getty Images
Craving all the perks of cat ownership without the actual commitment? This bizarre invention from the 1960s Japan wasn’t even available for purchase.
Marketed to scare off mice, it ultimately failed as the rodents were not fooled, ensuring that pet owners could avoid cleaning up after a real cat.
8. Nap Pillow
A man demonstrates his nap pillow. Photo by Ostricpillow
The original nap pillow, Ostricpillow, is delightfully peculiar. It allows you to nap at your desk while blocking light and sound, and you can breathe through your nose or mouth.
The only downside? Your coworkers might not appreciate your snoring during crucial meetings, though you might be too cozy to care.
9. Submarine Car
Rinspeed’s Squba, the world’s first functional submarine car, was showcased at the Geneva Car Show in March 2008.
In the 1977 film The Spy Who Loved Me, James Bond took his Lotus Esprit for a swim. Although the Esprit wasn’t actively marketed as a submersible vehicle, Rinspeed—a German car company—decided to create its own version.
The result was the Squba, a zero-emission electric sports car that could dive to depths of 10m at a speed of 3 km/h, powered by rechargeable lithium-ion batteries. Despite the buzz, it never moved beyond the prototype phase.
10. Mustache Shield
The mustache shield was designed to prevent interference from food and liquids while eating. Photo: Hulton Archive/Getty Images
Mustaches have been a prominent form of facial hair for centuries, with handlebar varieties becoming popular during the latter part of the 19th century. In 1876, Virgil Gates patented a protective shield to keep them clean while eating and drinking.
Composed of rubber and metal, the guard was secured by elastic cords that looped over the ears. Unsurprisingly, it didn’t gain widespread acceptance.
11. Fliz Bike
Conceptual illustration of the Fliz Bike, photographed in 2012. Photo: Fliz
The Fliz resembles a bicycle but functions similarly to a scooter. It harks back to the Laufmaschine Bike (or hobby horse) invented by Baron Karl Drais over 200 years ago. Like the Fliz, this early model had no chains and required riders to provide their own propulsion.
The key difference? Instead of sitting on a seat, riders dangle from the frame atop the bike. Constructed with a carbon fiber frame, the Fliz is lightweight and modern—but its practicality remains questionable.
12. Pet Rock
Gary Dahl, creator of “Pet Rock,” is seen packing the one-millionth toy for sale in 1975. Photos by GettyImages
Long before Tamagotchis and virtual pet simulations, there was the pet rock—a pet that required no upkeep. This quirky toy came with “bedding” and a ventilated carrier to mimic the experience of real pet ownership.
For a fleeting moment, it topped the charts as America’s best-selling toy. However, after just six months, interest waned, leading to the Pet Rock’s quick discontinuation in February 1976.
13. V-Shaped Bed
Evelyn Myers tests the V-shaped spring-free bed, created by Joseph Pilates. Photo: George Rinhart/Corbis/Getty Images
Joseph Pilates was not only known for popularizing fitness techniques but also for his unique creations, including a V-shaped bed designed after he moved to America. He filed a patent in 1930, believing traditional beds were uncomfortable and that his design would provide better support for the back and limbs. Unfortunately, public reception was lukewarm.
14. Crane Head Cereal Serving Device
Artist and inventor Dominique Wilcox showcases the Crane Head Cereal Serving Device in Kellogg’s wearable breakfast collection at the Serial Killer Cafe in Camden, England. Photography by photo
Artist and inventor Dominic Wilcox is known for his bevy of unconventional designs, such as a nose stylus for smartphone use in the bath.
The Crane Head Cereal Serving Device consists of a milk-powered hydraulic crane attachment worn on the head. Users can operate its arms to transfer cereal from a box to a bowl and pour milk on top. For some reason, this peculiar contraption hasn’t hit the market yet.
15. Baby Cage
An example of a baby cage proposed by the London Council in January 1934, intended to be mounted outside apartment windows. Photo: Fox Photos/Getty Images
Baby cages are a chilling concept that thankfully never took off. Designed for apartment dwellers with limited access to outdoor space, these cages were seen as a feasible solution for getting babies fresh air.
They were trialed in various locations around the globe, including New York and London, but fortunately, parents weren’t enthusiastic about the idea of their infants dangling outside a window.
Are you an insect fan? Please leave now: Victory image Royal Insect SocietyThe 2024 photography competition has been announced.
This year's close-up creature selection has a very terrible appearance beetle, unfortunate mummy hornet, and a unique monochrome butterfly. However, according to the judge, the most interesting picture was a photo of Gnart's egg (not Srek's parent Relative, but a robbery). This image, snapped by Benjamin Salb, is introduced in incredible details of the crimson eyes of the bug wide set.
The overall winner of the “Under 18” category was Alexis Tinker Zabara, a 17-year-old German photographer, and was an image of a big woman's jagged bug waiting for her prey on the flower head.
The Royal Insect Society exists to enhance the general understanding and gratitude of insects and the diverse and important roles they play in our global ecosystem.
Environmental category insects
A close-up photo of Bacillus Aricasninf with photos taken in a mountain near Athens, Greece. Photo: Panagiotis Dalagiorgos/RES
Insect portrait category
Dogbuttle (Geottle Pidae) taken in a dunes in a dunes in the UK. Photo: Ben James
Overall runner-up
BRACONIDAE, a parasitic insect, has attacked the Drepanosiphum Platanoidis. The sparrow larva from the aphids has built a COCO like a disc under the “mummified” body. Photo: Rupert Lees/RES
Insect behavior category
The process known as “spawning agents” depicts egg spawning. Photos by Jamie Spenceory/RES
Smartphone category
The blue clown butterfly (Ricanpa Rinji) took a rest on a dazzling dynamic pattern wings with the sun rays and shot it on a smartphone. Photo: SRITAM KUMAR SETHY/RES
read more:
Why does a butterfly fly straight?
Winners in the category of less than 18 seconds
A big woman's jagged ambush bug (PHYMATINAE) is waiting for a tangible flower head prey. Photographed at Montreal, Canada. Photo: Alexis tinker-tsavalas/res
Environmental category insects
The phenomenal spring sun of the dark blue URE covered between daisies at daisy involves the wings and refracts by Lee Frost/RES.
Environmental category insects
A small flower bee (ANTHOPHORA SP) is sitting on the flower of corn margold. Photo by Ryan Dale/RES
Environmental category insects
Curculio GLANDIUM taken in the oak leaves by Matthew Thomas/RES
Environmental category insects
A backlight shot of the Mediterranean Mantis (Iris Oratoria) on the sunrise. Photographed with Greece Sikinos. The reflection of the sun in the Aegean Sea looks like a background, but Mantis in the foreground gives an abnormal perspective. Photo: Panagiotis Dalagiorgos/RES
Insect portrait category
Ecememnius hornet appearing in the sun of the morning sun. Photo: Matthew Thomas/RES
Insect behavior category
This common red soldier Beatle (Rhagonycha Fulva) has taken off its wings. Photo: MARC BrouWer/RES
Insect portrait category
A portrait of a fascinating blue long horn beetle (anoplophora zonator). Photo by Douglas Bar/RES
Environmental category insects
A kind of grasshopper known as Taeniopoda Eques, a western horse pose posed with cactus. Rosemary Haleem/RES
Overall winner
This is a very detailed image of a living Gnat Ogre (HOLCOCEPHALA FUSCA) taken in the field. Photo: Benjamin Salb/RES
read more:
Image of the strange and most wonderful wildlife of this year this year
MWhen I was a kid, my parents were somewhat skeptical of video games. When I was a kid, I had a Super Nintendo and his N64, but they only let me play on the weekends, so on Fridays I’d come home from school and munch on Mario 64 with a big pack of Haribo Tongue Fastiks. I was there. My gaming horizons didn’t expand until his teenage years. Around that time, I started making enough money to buy myself a PlayStation 2 and started participating in forums with other geeks whose gaming worlds were much broader than mine.
PlayStation 2 had several features strange game. While the N64 had some success, and I’ve developed a lasting attachment to his Mystical Ninja starring Goemon, it wasn’t as good as the Sony console. There was “Dark Cloud” and “Monster Hunter,” “Ryu ga Gotoku,” “Mojib Ribbon,” “God Hand,” “Okami,” and “Rivit King,” but as far as I know, this is Frolf (Frog Golf). This is the only game about.
And then there was Katamari Damacy, the very epitome of everything weird and wonderful in the PlayStation 2 library, a fun game that celebrates its 20th anniversary this week.
The premise is this. The eccentric king of the universe, who wears Shakespearean purple tights, drinks too much beer and messes up the universe. And you, his little green prince, have to take the sticky ball to Earth. Roll it and collect bigger and bigger objects until they are big enough to replace a moon or a planet. This song is a strong contender for the best theme song in video game history, and also one of his best intro sequences. Behold.
Actually, she’s only 5cm tall. “That body, that physique. Are you really our son?” cries the king. Therefore, he must start small. You’ll need to start with something really small, like rolled up thumbtacks, dice, or empty soy sauce packs. Animals will chase the ball to try to throw it off course, and precious trash will be scattered if it hits something too big to roll. Katamari Damacy is surreal, hilarious, and a lot of fun, winding up cows, cars, people, and eventually buildings, islands, and clouds. It’s only about four hours long, but it leaves a lasting impression on everyone who plays it, simply because the music is haunting. Twenty years later, it still pops into my head from time to time as I wait for the kettle to boil.
Katamari soul. Photo provided by Bandai Namco
Katamari Damacy symbolizes Japanese game development during this era. PS2 technology was good enough for game designers’ more ambitious ideas to start blossoming, and budgets weren’t yet so outrageous as to require multi-million sales. The result is a slew of short, surreal, and often quite broken games. who I really wanted that. You can clearly see the designer’s heart reflected in it. Many of these games were never released to the world. Katamari Damacy itself was never officially released in Europe, but fortunately for curious teenagers in the ’00s, importing the game was relatively easy if you knew how to use the Internet. Thankfully, the PS2’s region lock was easily circumvented. In 2004, getting a copy and putting it to work felt like unearthing an artistic treasure.
Katamari designer Keita Takahashi brought together students from publisher Namco’s design school and programmers from the arcade division to complete the game in less than a year on a budget of £650,000. Takahashi studied sculpture at art school and went on to create some interesting games, but it’s safe to say that none were as interesting as this one.Namco continued make a series without him Many years have passed since he left the company in 2009, but things have never been the same. Recent Katamari Damacy games have felt like self-parody. The reason Katamari Damacy is so loved is precisely because no one has ever seen anything like it before.
No doubt, this is mainly because I am not a teenager anymore, but I hardly ever feel that way now. It feels like you’re playing something you’ve never seen before.If you’re lucky do not have For those who have already experienced it, there is a great remaster of Katamari Damacy on Steam and all consoles called Katamari Damacy Reroll. Happy 20th birthday, beautiful weirdo.
what to play
Dragon’s Dogma 2. Photo: Capcom
dragons dogma 2 ‘ released on Friday and I’m having the time of my life. I’ve been waiting 12 years for a sequel to the weirdest medieval RPG I’ve ever played, and it didn’t disappoint. It’s like Elden Ring meets The Witcher, except it’s pleasantly silly in that it can pick up people and carry them around for hours. For no reason, you find yourself fighting an ogre in the middle of a crowded city where no one is paying attention.
This is the antithesis of the tightly scripted RPGs that currently dominate the genre, and instead allows you to mix and match a bunch of fun systems and experiment with how they collide, giving you a sense of the unexpected. always happens. As I type this, I’m in a haunted castle with a magician who looks like Aladdin Sane-era David Bowie and a retinue of greatsword-wielding warriors straight out of Dark Souls. I’m in the middle of an adventure.
Available on: PS5, Xbox Series X, PC Estimated play time: 50+ hours
what to read
Sony’s PlayStation VR headset. Photo: Afro/Rex/Shutterstock
Bloomberg claims that Sony has temporarily suspended production of the product. PSVR2 virtual reality headset, thousands of units remain unsold. Sony has never fully bought into the luxury of this expensive accessory – it’s only released a few games for it since its launch last year – and consumer demand just isn’t there either. It seems that. I’m sorry I said that.
Mutsumi Inomatathe character designer and artist who defined the look of Bandai Namco’s Tales series of role-playing games; died63 years old.
EAstudio is the latest giant publisher to suffer layoffs. 5% reduction in workforce worldwide. Apex Legends developer Respawn was the hardest hit.
“Which Pokemon game for Nintendo Switch would you recommend for my introduction?” 9-and Will my 6-year-old daughters be involved in this series? ”
Luckily, Danny, I just introduced Pokemon to kids my age this year, and now they’re hooked. They get so much joy out of these games and it’s really gratifying. Here he has two good options. The first one Pokemon Let’s Go Pikachu and Eevee!is a remake of the OG Red/Blue Pokemon games that blends old-school combat and collecting with Pokemon Go-style catching, where kids can help catch creatures by simulating throwing Pokeballs at the screen. Masu. (Also, if you played the original version, your kids will think you’re omniscient.)
Other options are pokemon swordand shield, just finished with the kids. It’s simple, cartoonishly beautiful, easy to read, and comes with all the game mod cons that first-generation Pokemon trainers had to do without (which moves are effective against opponents, which (e.g. actually letting you know if a technique is ineffective). (on the battle screen).
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