# data[].attributes.body
This picture is what I think someone who is belligerent angry would look like. I think the squinted eyes that come closer together and the furrowed brows and the lips would indicate anger.

# data[].attributes.body
The posture, the empty eyes are the two big indicators to me that the student is bored.

# data[].attributes.body
I think human give the same look as this puppy when they are sad. The face that sags and the eyes that unintentionally droop and the slump of the body is what indicates sadness to me.

# data[].attributes.body
The squinted eyes and the contored face says that they do not understand.

# data[].attributes.body
This happiness can be seen and felt. The big grin, teh raised check bones and the squinted eyes  that raise up say that they are happy!