This 21-acre city park on Biscayne Bay is so darn dog-friendly it features a new fenced-in, leash-free pooch playground. The dog park, which opened February 15, is big enough for ball throwing or disk tossing, and there's plenty of room for romping from sunrise to sunset. When work is complete, the grassy canine confines -- sponsored by Ralston-Purina, the Miami Department of Parks and Recreation, and the Humane Society of Greater Miami -- will boast water fountains and pooper-scooper stations. If your pup tires of all the sniffing and humping, the rest of Kennedy Park is perfect for a leisurely, but leashed, stroll. Woodsy areas on the fringes are freaky with wild-animal smells, green expanses, and a boardwalk by the water. Pack a snack, bring a good book, find Fido a stick to gnaw, lie back, and relax.