Amanda Seyfried, Dog Wow Late Show Viewers >>Hollywood

As previously noted, Amanda Seyfried loves her dog. And now we know why.

The actress appeared on The Late Show with David Letterman last night and brought along her trusty canine, Finn.

And, much to the shock of the veteran host, the pet perfectly followed his owner's commands, sitting very still even when a juicy hamburger was placed on his adorable, obedient head.

Watch Finn prove Seyfriend correct in the following video, which also includes a reference to the star exposing her boobs in the film Lovelace. Hot and impressive stuff!