In addition, the scientists considered how each species lives and hunts-some canid species live and hunt in groups, and some travel solo or in pairs. The team analyzed images of 320 individuals of 25 species (there are 34 living canid species), comparing the facial color patterns and both pupil and eye placement between each.
How does it vary among these related species? How does it relate to a specific species’s social or predatory behavior? Japanese researchers decided to look at images of canids to understand the differences in gaze communication among wolves, foxes, dogs, jackals, and coyotes. Previous research suggests that many predators gaze “camouflage” for increased success hunting. The function of gaze communication can vary among social and predatory animals. The horizontal shape of human eyes and the whites that surround our pupils set us apart from the rest of primates we are the only species in our order that use gaze signaling. The shape of eyes, the color that surrounds them, and the shading and contrast that are part of the eyeball-each contribute to, or detract from, the ability to communicate with a gaze. Dogs can do this, too, and pick up on what object we’re following.įor years, scientists have studied gaze signaling, as it’s called, in humans and other animals, including how morphology plays a role. Consider a simple gaze-we can follow others’ eye movement to see what they are seeing.
CHIMPANZEE FACE CAMOFAUGE FULL
Full facial expressions convey a tremendous amount, and our eyes alone often let others know what we are thinking. The human face is well-formed for communication.
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