Last week, we told you all about Pete Wentz and wife Ashlee Simpson-Wentz’s desperation to tame their wild English bulldog, Hemingway, with the help of world renowned “Dog Whisperer” Cesar Millan.

Now you can get a sneak peek at the family’s appearance in this video clip.

Don’t forget to catch Ashlee and Pete on Dog Whisperer, airing Sunday, Dec. 28 on The National Geographic Channel.