Montmorency (dog!)

Hello! Could anyone tell me what breed of dog it is who plays Montmorency in this version? I know in the book he was described as a Fox Terrier and in a previous production he was played by a Jack Russell, but I'm wondering what breed this dog is as I think he's gorgeous! I have a feeling he may be a black poodle, but not sure...can anyone throw any light on the subject? Thanks!