Birds and reptiles may not resemble humans in many ways, but they cry similar tears. The composition of human tears is well known, but until now, there was very little research into the composition ...

Aug. 13 (UPI) --The tears shed by birds and reptiles are surprisingly similar to human tears, according to a new study. However, researchers also identified key differences. The study, published ...

Bird and reptile tears aren't so unlike our own, shows a new study in Frontiers in Veterinary Science. But the differences could provide insights into better ophthalmic treatments for humans and ...

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We’ve all heard the phrase “crocodile tears,” but do crocodiles actually cry? Interestingly enough, yes, they do, but not for the reasons you might think. Thanks to research and social media, the ...

To the best of our scientific knowledge, only humans cry, which is to say the tears of other animals are not inspired by their emotional states, reports Katherine J. Wu for the New York Times. The ...

Whether crying makes you feel better or worse emotionally, shedding tears is an important part of keeping our eyes healthy. Tears help shield our eyes from the rest of the world and keep them hydrated ...

The less glamorous relatives of butterflies have been known to use their long proboscis to sip the tears of everything from ...