Denise Richards: It’s Canine

Denise Richards (in some sort of pink satin bloomers/roller derby shorts ensemble) made an appearance at the 2nd Annual Bow Wow WOW charity event at the Playboy Mansion.

Hollywood has gone to the dogs lately. Lauren Conrad, Rumer Willis and Nicky Hilton have all made appearances at pooch-friendly events in the past week.

Barking and sniffing in the Playboy doghouse were queen of crazy Paula Abdul, Hugh Hefner and his Girls Next Door, Jerry O’Connell, Amy Smart and Tori Spelling.

Denise, as evidenced by her reality show, It’s Complicated, is a big animal lover. Not only does she keep several dogs on her property, she has pigs, too.

Apparently, Charlie Sheen tired of living on Old McDonald’s farm.