What an angel!

Dancing with the Stars alum -- and Playboy's December cover model -- Joanna Krupa reveals her support for animal rights in an eye-popping new ad campaign for PETA.

In this exclusive preview of the "Be an Angel for Animals" campaign, Krupa (wearing angel wings) is joined by her dog, Rugby.

On Dec. 1, the model will lead a protest outside a Los Angeles pet store that sells dogs and puppies from "puppy mills.

"We're trying to spread the word that breeding isn't the way to go," Krupa says in a PETA interview.

"Somebody needs to put their foot down and stop this breeding and these puppy mills. … they're in these little tiny cages, and all they're doing is breeding their whole life. It makes me so angry that our government doesn't do anything about it. So I am!"