Animals are a well-established topic for sculptors, and many examples can be seen around town in the form of metal or marble horses, stags, lions and eagles. Last fall, California artist Michael Whiting brought his own menagerie to the Plus Gallery for Walk in the Park, which featured constructivist renditions of a doe, a buck, a squirrel, a rabbit, a mouse — and a man and a woman — creating a hard-edged, dusty-colored Garden of Eden. Typically, sculptures of animals are meant to convey strength and beauty, but Whiting made the best of this tradition by instead casting them as players in a conceptual installation.