Gavin Geoffrey Dillard wrote this charming revue, a West Hollywood import, for dog lovers. There are songs about chasing one's tail, singing to sirens, and whizzing on stuff, as six puppies in a pound sing perkily about their past lives as beloved pets, working dogs, and street tramps--and howl to be adopted. The cast, particularly Cory Goodrich as a formerly pampered poodle and Tony Barton as a dangerous pit bull with a bit of flirty chihuahua mixed in, are warm and adorable, and Sharell Martin's inventive costumes capture the dogs' personalities. But even the most devoted fan of canines might find two hours too long, especially since the melancholy, power-ballad second half tries to turn dogs into, well, Cats. Through 1/8: Fri 8 PM, Sat 2 and 8 PM, Sun 2 PM. Chicago Center for the Performing Arts, studio theater, 777 N. Green, 312-733-6000. $45.