Sheep have a bad reputation, often seen as one of the dumbest animals on the planet. But a recent University of Cambridge study reveals they’re actually quite clever. The research proves that sheep can be trained to recognize human faces from photographs, and they can identify a picture of their handler without prior training. Given their relatively large brains and longevity, researchers are hoping the humble sheep can help in the study of neurodegenerative disorders like Huntington’s disease.