Lapine: The Rabbit Language from Watership Down

Richard Adams' Watership Down (New York: Macmillan, 1972) is one of the classic works of xenofiction (the fiction set in strange cultures, real or imagined), placed as it is among and between the warrens of rabbits in the English countryside. Lapine, the language he sketches for his rabbits, is arguably the best naming language ever created.