When you returned home from summer vacation,Secret Confessions (2025) Wifey's BFF Episode 48 your dog might have leapt out the door, jumped on you, and licked your face. And that's not all.
The emotions gushing inside your dog could make its eyes wet, says a new study recently published in the science journal Current Biology.
Researchers suggest the love hormone oxytocin drives this tear secretion. Mammals, like dogs, release oxytocinwhile bonding with their babies. The lead author Takefumi Kikusui is a dog parent himself, and noticed that his poodle’s eyes become watery when it nursed its puppies.
"That gave me the idea that oxytocin might increase tears. So, we performed a reunion experiment with the owners," said Kikusui, who is a veterinary medicine professor at Azabu University in Japan.
SEE ALSO: Dogs are smarter than you thinkFor the test, veterinarians folded a strip into the dog’s lower eyelid and temporarily clasped it there, which is commonly done to diagnose dry eyes in dogs. The strip measures tears that are already there, tears that are secreted because of the strip itself (which slightly irritates the eyes), and tear secretion that happens apart from the irritation.
To be certain if dogs really produced tears because of affinity with their owners, and not anyone else, the researchers also included people who the dogs were familiar with, but not their owners. The tear volume increased significantly when the dogs met their owners, and not when they met their acquaintances. They also applied oxytocin solution to the dogs’ eyes and found tear secretion levels went up even more. The researchers used around 20 dogs in each of the experiments.
"I think this is potentially a groundbreaking experiment, simple and clever."
"I think this is potentially a groundbreaking experiment, simple and clever," Miiamaaria Kujala, a cognitive neuroscience professor at the University of Helsinki in Finland, told Mashable. Kujala was not involved in the recent study.
Nobody previously thought to conduct this kind of experiment on tear volume before, because dogs or other animals don’t often cry visibly, she explained. But the scientific community will have to repeat this experiment in the future to confirm this finding, Kujala cautions.
The study also found that the dogs' teary eyes triggered more caregiving in humans. The researchers asked participants to rate their impressions of photos of dogs with artificial tears, asking how much they wanted to care for dogs. They ranked dog photos with artificial tears higher than those dogs without tears.
Want more scienceand tech news delivered straight to your inbox? Sign up for Mashable's Top Stories newslettertoday.
As this new canine research suggests, dog tears could serve the purpose of stoking human caregiving. But Kikusui mentions another possibility: producing tears might serve as a communication tool. Some mammals, including humans, can produce "pheromones" in tears. Pheromones are chemical signals that transmit different types of information between animals, Kikusui said.
Dog cognition is an emerging area of research. There are several theories why dogs grow so close to humans, and why they read human behavior so well, Kujala said. One of them is that dogs were an early domesticated species. "Our friendship with dogs has outdated the development of agriculture," she said.
Previous:Yet another stellar week in hell.
People can't stop watching a Fox News anchor fall out of his chairSamsung's massive 8K TV is up for preThere's now an 'Office' parody musicalNew study says dozens of people have died while attempting dangerous selfiesEnjoy John Cena and Victoria Justice giggling their way through Clinton and Trump impressionsRussian government hackers mined bitcoin to fund attacks on FIFA, anti15 thoughts I had while reading 'Harry Potter and the Cursed Child'Twitter comes up with a stream of titles for #DonaldTrumpTheMovieDr. Hannibal Lecter: the fictional crush still ruining my life at 23Twitter comes up with a stream of titles for #DonaldTrumpTheMovieApple, Amazon deny reports of a massive Chinese hardware attackUber gets ready to take the backseat to Didi Chuxing in China'Doctor Who' history made: Jodie Whittaker aces American debutApple, Amazon deny reports of a massive Chinese hardware attackScott Wilson, Hershel from 'The Walking Dead,' dies at 76The pop culture male heroes who don't realize they're actually villains'Venom' has two end credits scenes. Here's what they mean.Taylor Swift breaks political silence, backs Democrats in midterm racePhotojournalist documents fearsome cat fights on Downing StreetAussie politician commentates her own bizarre documentary via Facebook Live Portfolio: Miroslav Tichý by Deirdre Foley Advice to Our Scottish Readers by Lorin Stein and John Jeremiah Sullivan Yes, the birth certificate proves Elon Musk and Grimes' baby is legally named X AE A New Beats Studio Buds+ earbuds will come in new, transparent color TV cops break down how police dramas need to change 'The Late Late Show with James Corden' is ending with 24 hours of TikTok clips A Week in Culture: Tom Nissley, Writer and Game Writing Jobs; Literary Style Icons by Sadie Stein Li Bing Bing at High Tea by Claudine Ko Dummy Land by Avi Steinberg Staff Picks: The Unseen Bestiary, The Avoidance of Love by The Paris Review Viral TikTok comments showcase zoomers expertly dunking on millennials Poem: Episode by Jennifer Michael Hecht David Orr: Lost in the Archives, Summer 1996 by David Orr 'The Witcher' Season 3 teaser sets up Henry Cavill's last ride as Geralt Nearly 25,000 Twitter users pay to subscribe to Elon Musk's exclusive tweets Pornhub launches Premium Lovers, a premium membership for couples 'Quordle' today: See each 'Quordle' answer and hints for April 25 Staff Picks: Microstyle, The Epiplectic Bicycle by The Paris Review Donald Trump's bizarre walk down a ramp is a big thing now: #RampGate
1.3779s , 10130.8203125 kb
Copyright © 2025 Powered by 【Secret Confessions (2025) Wifey's BFF Episode 48】,Unobstructed Information Network