We’ve all been on the receiving end of an angry glare, whether from a teacher, parent, boss, or partner. And now, it seems irate expressions really do boost the effectiveness of threats without ...

Once Müller and colleagues trained the dogs, they ran them through choice trials, in which the animals had to pick between strange faces with either happy or angry expressions. The researchers ...

In the research, dogs were trained to discriminate between a happy and an angry human expression from 15 pairs of photos which revealed only the upper half or lower half of the face. Researchers ...