Paris Hilton and Ellen DeGeneres meet Gibson, the world's tallest dog

Gibson is a dog. A big dog. The world's LARGEST dog. And on Monday Gibson was hanging with (and dwarfing) the stars.

Gibson is a 4-year-old harlequin Great Dane who stands about 42 and a half inches at the shoulders but when he really wants to get big he stands on his hind paws--7 feet, 6 inches tall!

Gibson got to talk (or bark) with Ellen DeGeneres and got a hug from Paris Hilton (who, of course, looks tiny in comparison.)

What was it like being top dog for a day? Sandy Hall, Gibson's human companion says, "We were treated very nicely. Top accommodations. Hotel, very nice. The cars, very nice. Gibson had his own dressing room. All the producers and writers came and introduced themselves. They had pictures taken with him."

You can read more about Paris, Ellen, and Gibson on TheUnion.com.