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:
“I wish more and more that health were studied half as much as disease is. Why, with all the endowment of research against cancer is no study made of those who are free from cancer? Why not inquire what foods they eat, what habits of body and mind they cultivate? And why never study animals in health and natural surroundings? why always sickened and in an environment of strangeness and artificiality?”
—Sarah N. Cleghorn (1976–1959)