A very interesting study from University of Portsmouth, looking into how horses can remember the facial expressions they see on human faces and respond differently if you smiled or frowned when they last saw you.

Click the link to read more!

https://www.cell.com/current-biology/fulltext/S0960-9822(18)30364-6?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0960982218303646%3Fshowall%3Dtrue