A dog can learn to discriminate between a happy and an angry face.
This happens during a dog’s daily interaction with a human. Our furry companions can actually tell how we’re feeling and that’s why they’re always there to support us when we’re feeling blue. A study showed that a dog’s ability is directly to understand emotion is related to the amount of interaction they have with humans.
Dogs keep in mind how we look when we’re happy, angry, and sad.
And if you are wondering how they even do it, it’s really simple. They use their memory. During the study, the dogs were shown 15 pairs of images of human faces. It was concluded that dogs probably keep the real emotional human faces, that they’ve been exposed to, in their memories. In the exercise, they compared their reaction to these photos to see if they could figure things out.