The dog days of summer can be kind of ruff, but it also makes for a good time to get in those last moments of summer reading. Luckily, “The Ultimate Doggy Directory,” penned by Rockaway resident, Joan Mettler, makes for a lighthearted, fun and easy read, any time of the year. Dogs don’t have to rely on humans for everything, do they? According to “The Ultimate Doggy Directory,” a guide written for dogs by dogs (and Joan), of course not. If a dog breaks a leg, he can go to a Setter.