In Other Animals
The walrus, some species of gibbon apes, the conus snail have a throat sac. Many amphibians will inflate their gular sac to create certain vocalizations to communicate, scare off rivals (to proclaim territory or dominance), and locating and attracting a mate by using their vocal sac to amplify their voice to be heard louder and closer. And some species of lizards may also have a gular fold (and gular scales), the Orangutan, only in males, is the only known ape to have this characteristic.
Read more about this topic: Gular Skin
Famous quotes containing the word animals:
“The greatness of man is so evident that it is even proved by his wretchedness. For what in animals is nature, we call in man wretchedness—by which we recognize that, his nature being now like that of animals, he has fallen from a better nature which once was his.”
—Blaise Pascal (1623–1662)