FOX: More pensive than cunning, in the woods, and the only one not on secondment.
RABBIT: One of a pair, to be devoured.
MUTT: Swirl around French milk to find the thing he chases. (Sing!)
-N: Pitied by a Ringbearer.
CAT: Four-legs in a chestnut; fiddler in a song.
How did you guess?
I'd already written it when you posted yours.