They tapped the image of the test expression - happy or angry - with their snout and were rewarded with a treat when made the right choice. (The video above shows the experiment in action.) ...

Dogs may indeed be able to discriminate between happy and angry human faces, according to a new study. Researchers trained a group of 11 dogs to distinguish between images of the same person ...

Psychologists at the University of Sussex studied how 28 horses reacted to photographs of positive and negative human facial expressions. The horses were shown pictures of happy and angry ...

Some of the dogs were trained to pick the angry half-face; some were trained to pick the happy half-face. When they touched the correct face on screen with their noses, they received a treat.

To modify these biases, participants were shown composite images of facial expressions that were happy, angry or emotionally ambiguous and asked to rate them as happy or angry.

Writing in the journal Royal Society Open Science, the team describe how 20 goats interacted with images of positive (happy) and negative (angry) human facial expressions and found that they ...

Research is now suggesting something dog-lovers have long suspected - man's best friend can tell the difference between our happy and angry faces. Scientists at the Messerli Research Institute's ...

Target faces, half happy and half angry, were presented at study followed by recognition tests of the same and different faces at multiple test delays. An interaction was found between emotional ...