Finished Watership Down by Richard Adams. Despite a few odd choices (why give rabbits a language of their own they're no more capable of speaking than English? Why do mice talk with a Spanish accent?) overall I thought this was excellent, with some very strong nature writing that managed to highlight, without intending to, what we've lost since. (For example, the rabbits hear a corncrake at one point -- this was written in 1970-ish, but even by the time I was volunteering on bird reserves in the early 90s, these birds had already become confined to the Hebrides and Ireland.) The rabbits' culture and their folk-tales were brilliantly done, without going to the impossible levels of William Horwood's Duncton moles (some of whom can write). I loved how most rabbits were incapable of understanding something as simple (to us) as the concept of a raft. The omniscient narrator mode might be a hard sell for adult fiction these days, but nothing else could have worked as well.
I might rewatch the 1978 animated film soon.