This type of depression, called melancholia, is marked by a complete loss of interest in daily activities ... stage melancholia make different facial expressions when watching certain material.

There is a distinctive and easily recognized open-mouth expression that is the canine equivalent of a human smile, ...

If so, then there is interest. Plus, open arms are just ... they are used only when a person experiences extreme stress. Facial expressions alone can signal this state, such as pursing or sucking ...

"I feel happy. Therefore I am in a good mood." These are what facial expressions mostly reveal. Think about the different words available and try to use an interesting and precise word for what ...