Humans appear to be the only species clearly proven to shed tears specifically because of emotions. Elephants, primates, and dogs show behaviors and biological responses that come closest to human ...

While crying is a perfectly natural thing to do, it doesn't always happen at the most opportune times. Surprisingly, our bodies don't just automatically produce tears. Our limbic system, which is the ...

Crying also triggers the release of feel-good chemicals, Dr. Parker says, like pain-relieving endorphins and oxytocin (the ...

Researchers disagree about whether your best friend tears up more when it is reunited with you, but agree that the wet eyes of a pup make you want to care for it. By Elizabeth Landau If you’ve felt ...