Dolly has invented her own diabolical version of catch. Here’s how it works: She drops the ball near your feet and taps your hand with her paw. If you do not respond, she rolls it closer toward you with her nose. Then, just as you finally reach for it, she snatches it away from you. It’s like catch, but without all that silly running back and forth on her part. Who says dogs aren’t smarter than we are?