A hiss from your cat, a growl from your dog—you don’t need four legs to recognize these warnings. Back off. Quit it. Danger. Most of us can also translate soft purrs or playful yips as contentment or an invitation to play. It turns out humans may be just as good at understanding the language of our feathered friends. A recent study in Royal Society Open Science shows that humans can intuitively pick up on basic chicken emotions—excitement and discontent—by the sound of their clucks alone. Nearly 70 percent of people…
