This dog is going to have the voice of Robert Downey Jr. You tell me if you can see that working. I can. In fact, I can even see Downey in the dog's face, a little.
This concept art for Dreamworks' upcoming big-screen adaptation of Peabody and Mr. Sherman appeared on Cartoon Brew, but there's no clue as to how they got a hold of it.
Don't forget, this isn't the first time Downey Jr. has played a dog. Maybe they'll include Pound on the Peabody DVD special features. Ahem.