Editing Semnopithecus (section)

===Vocalizations===
Gray langurs are recorded to make a number of vocalizations:<ref name="Bhaker 2004"/><ref name="Hohmann 1989"/>
*loud calls or whoops made only by adult males during displays;
*harsh barks made by adult and subadult males when surprised by a predator;
*cough barks made by adults and subadults during group movements;
*grunt barks made mostly by adult males during group movements and agonistic interactions;
*rumble screams made in agonistic interactions;
*pant barks made with loud calls when groups are interacting;
*grunts made in many different situations, usually in agonistic ones;
*honks made by adult males when groups are interacting;
*rumbles made during approaches, embraces, and mounts;
*hiccups made by most members of a group when they find another group.