Pets from dogs to rats donned their best Halloween attire for a "Howl-O-Ween" party in Brooklyn Heights Sunday.

Some costumes included a Jurassic Park dinosaur, Flintstones characters and even pets wearing prison stripes. One owner dressed her pet rat as Pizza Rat.

The animals strutted their stuff along the promenade for good causes: to raise awareness about animal adoptions, and to raise money for Badass Brooklyn Animal Rescue and the Brooklyn Bridge Animal Welfare Coalition.