The timeline below shows where the term Lapine appears in Watership Down. The colored dots and icons indicate which themes are associated with that appearance.
Chapter 19: Fear in the Dark
...grows closer, they can make out words—“All dead,” the voice says, crying, before shouting Bigwig’s Lapine name, Thlayli.
(full context)
Chapter 23: Kehaar
...look at the bird, and begins talking to it, but realizes it does not speak Lapine very well. As the bird pecks in the dirt, Hazel realizes it needs some food,...
(full context)