The Chessie can have a goofy sense of humor, but the entertainment value can be offset by his sometimes obsessive stubbornness. Once he gets an idea into his head, it can be hard to remove. And when he wants something, he will be persistent in going after it. That’s great if you have him retrieving ducks, not so great if he’s bugging you for something else, like a kid in the grocery store who wants candy.