A new word to me; have just been looking it up. Sorry to seem miserable-and-negative -- but if my understanding from said looking-up, is correct: "pecus" -- which can be either collective or singular -- applies not solely to "cow-kind": admittedly, more to "cattle
and equines" than to other creatures; broadly applicable, however, to any kind of domestic mammal. Not sufficiently specific, I tend to opine, for
@181's purpose -- though he of course, may think otherwise !
At all events: a splendid newly-discovered word for Scrabble !