According to a study published in the scientific journal Current Biologyjoyful dogs They cry more when going through positive moments, such as when meeting their friends. owners. This doesn’t mean that dogs cry like we do, but when they feel good, their eyes water.
Scientists began investigating the issue six years ago when they noticed that a poodle was watering while nursing its pups. So they began to suspect that oxytocin might be responsible for the increase in tears in puppies – oxytocin is known as the love hormone.
“We found that dogs shed tears associated with positive emotions. We also discovered oxytocin as a possible underlying mechanism. This gave me the idea that oxytocin might increase tears,” said Takefumi Kikusui, a researcher at Azabu University in Japan.
tears of dogs
In previous observations, researchers have found that oxytocin is released in dogs and their owners during interactions. So they started doing tests to measure the volume of dogs’ tears before and after meeting with their owners.
The results show that dogs cry when meeting their owners, but not when meeting people they don’t know. They even added oxytocin to the pups’ eyes during testing, proving that the substance increased tear production.
So the study supports the idea that the release of oxytocin is necessary for tear production when dogs are reunited with their owners. To date, scientists have yet to investigate whether dogs also produce tears during adverse times.
ARTICLE Current Biology: doi.org/10.1016/j.cub.2022.07.031
Source: Tec Mundo
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