Amanda Seyfried's dog steals the spotlight on 'Late Show with David Letterman'

Amanda Seyfried has never been shy about the love she has for her dog, an Australian Shepherd named Finn. She even created a Twitter account for her faithful companion. That's why it wasn't very surprising that Finn tagged along with Amanda to her appearance on the  "Late Show with David Letterman."

What may be surprising is that the dog came prepared with a "Stupid Pet Trick," a longtime staple of the show. Amanda bragged to Dave that Finn could balance a hamburger on his head, which Letterman didn't believe because the temptation of meat would be too much for the dog.

When she called Finn out to prove it, he didn't disappoint, leaving Dave utterly shocked. "Look at that," he exclaims, "That is remarkable. Oh my God, what a tremendous dog!"

Check out the segment below:

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