Dolphins’ open-mouth behaviors during play are like smiles, a study claims Whether smiles or not, the gestures seem to be important for how dolphins communicate ...

Many people sleep with their mouths open due to structural issues or conditions developed later in life. Find out why mouth breathing could be harmful, why it happens, and how to solve it.

New research from the Marine Biological Laboratory (MBL) and ADA Forsyth uncovered an extraordinary mechanism of cell division in Corynebacterium matruchotii, one of the most common bacteria ...

Dog Arrives at Shelter Too Injured to Open His Mouth. Now He is Looking to Leave with a Smile on His Face Nicky loves cuddles and playing with other dogs ...

A polar bear pleaded with humans for help after getting a tin can stuck in its mouth. The 2-year-old female was roaming around northern Russia when her tongue was caught in a can of condensed milk.

The pig’s mouth revealed its ordinary sharp, tusk-like canines saddled up beside smaller, slightly more human-looking teeth nubs. In theory, a similar process could play out in humans.

Police in southern Mexico said Wednesday they found a dismembered human body after spotting a dog trotting down the street with a human arm in its mouth. It was the third time in the last month ...

Nick Kroll joined us to talk about his work on Big Mouth and Human Resources. Plus, why he's traded in his on-screen roles for voice acting gigs and a seat behind the scenes.

Why do some people always sleep with their mouths open? Know 4 problems that cause it If you have any of these problems, it is likely that you breathe through your mouth while sleeping. Check out ...

Some scientists have turned the dining table rule book on its head, claiming that eating with your mouth open can actually make your food taste better.

The theory is this: Sleeping with your mouth open can lead to snoring, which can disrupt the quality of your sleep, and leave you feeling exhausted even after a full eight hours in bed.