Vocalization takes many forms, ranging from solo and choral song to responsorial, unison and multipart singing.
en.wikipedia.org Feeding 11-ketotestosterone coated scallops to toadfish increases their calling behavior, which identifies 11-ketotestosterone, an androgen hormone, as a mediator of midshipman fish vocalization.
en.wikipedia.org Another complication of the hot-plate test is determining what constitutes a behavioral pain response; is it the lifting/licking of paws, vocalization, attempting to climb out of the cylinder, etc.
en.wikipedia.org These birds are notable for their vocalization, especially their remarkable ability to mimic a wide variety of birds and other sounds heard outdoors.
en.wikipedia.org In addition to vocalization, malemale interactions may involve grabbing and pushing and even direct physical combat.
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