“I’ve always tried out my material on my dogs first. You know, with Angel, he sits there and listens and I get the feeling he understands everything. But with Charley, I always felt he was just waiting to get a word in edgewise. Years ago, when my red setter chewed up the manuscript of Of Mice and Men, I said at the time that the dog must have been an excellent literary critic.”

—John Steinbeck, The Paris Review No. 63, Fall 1975, pp22-23; link here