https://phys.org/news/2018-08-goats-happy-people.html

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 preferred to look and interact with the happy faces.

Dr. Alan McElligott who led the study at Queen Mary University of London and is now based at the University of Roehampton, said: "The study has important implications for how we interact with livestock and other species, because the abilities of animals to perceive human emotions might be widespread and not just limited to pets."