Lecture, three hours; discussion, one hour. Requisite: course 111A or Neuroscience M101A. "Homo sapiens" are only species currently on planet to possess language. Exploration of whether other species possess potential building blocks for language. Topics range from examination of how bees and ants signal about food sources to whether structured songs of birds, whales, and monkeys contain compositional meaning. Topics intersect with those in fields of anthropology, biopsychology, linguistics, molecular genetics, neuroscience, and physiology. Letter grading.