Yes, cats can paint. The phenomenon has to do with territorial marking, acrylic paint smelling a little like cat pee and a lot of pet spare time. Cats overwhelmingly favor abstract expressionism, and none imitates Andrew Wyeth. “Why Cats Paint” spoofs – or does it? – these discoveries with some witty, staged photographs of artists such as “Tiger, Spontaneous Reductionist” and their, uh, work. Best, it nails the pretentiousness of art criticism to the wall: “Time will tell if this peculiarly violent form of painting . . . develops an integrity and viewpoint that would justify its inclusion in a future survey of this kind.”