Come on, dog, haven't you seen "The Pelican Brief" or "Sleeping With The Enemy"? What about "Dying Young"? Julia Roberts has been America's sweetheart for, like, forever. There's no reason to be afraid.
Of course, maybe the dog just doesn't like seeing one of Hollywood's most glamourous leading ladies reduced to hawking makeup on the pages of a magazine. After all, doesn't the commoditization of natural beauty debase us all? Dog has a point, y'all.
Also, note to aspiring viral video-makers... shirts are your friend.