This dog expression might show up if you’ve just ... Squinting can signal pain or illness, and rapid blinking can indicate ...

Wolves don't have these muscles, which suggests dogs' adorable expression is an evolutionary ... while owners of more fearful dogs reported more negative emotions. And while several studies ...

All of these researchers concluded that dogs have most of the same emotions that humans do, including fear, anger ... a limitation on the range of facial expressions produced by dogs.