And I don't know why it has a job. It will not sit where it's supposed to. It's a treat whore... It'll do anything for a treat. But if you don't have treats and you run out and you're in a scene and you're half way through the scene that's only about four minutes long and suddenly this dog gets up, sniffs your crotch and leaves... And Maggie Smith goes, "Can you not control him?"
No, I can't Maggie. I'm sorry.
...Myself and Hugh Bonneville, who plays Lord Grantham, have a plan next year [the interview was from 2013 before the dog was written out of the show] to buy a dog and train it ourselves. It'll be cheaper. We'll take the money — and spend it on cats.
Leech goes on to describe the parlor games the cast plays during dinner scenes, which can last 12-14 hours.