Hugh Hefner & Crystal Chasing Tail at Mansion Wedding

1/1/2013 12:45 PM PST

Hugh Hefner -- Chasing Tail at Playboy Mansion Wedding

Barking News

Hugh Hefner or Crystal Harris's dog -- it's a toss up which one's sniffed more ass at the Playboy mansion ... but one of them took last night off, we presume, for the Harris-Hefner wedding.

Ex-Playmate Crystal forced her Cavalier King Charles Spaniel, named Charles, to go black tie for the ceremony ... which was attended by a small group of family and friends.

We're not much for wedding pics ... unless there's a damn cute dog involved.

So, there ya go.

Fun fact: Most King Charles Spaniels live between 10 and 15 years. Hef's longest marriage was 10 years and change.