Lateralization in brain response to human vocalizations
If you want to keep your emotional life a secret from everyone, then the research is pretty clear—don’t get a dog. They are just too skilled at interpreting how we are feeling. Previous research has shown that dogs can recognize emotions in people’s facial expressions—they are able to distinguish emotional facial expressions from neutral expressions and they can tell happy faces from angry ones. There has been less research on dogs’ ability to distinguish between different emotions that are conveyed through auditory means, but we do know that they can match happy and angry faces to vocalizations that match those emotions.
via Whisker Therapy