But it turns out horses are capable of pulling faces just like humans, too — which may shed more light on what they’re feeling.

In fact, horses can make 17 facial movements — which is at least three more than our relatives, the chimpanzees, and just 10 less than humans.

In order to try and identify whether horses can pull more than just a long face, researchers at the University of Sussex in the United Kingdom created the Equine Facial Action Coding System (EquiFACS) to determine any discrete expressions made by horses.