We’ve entered the Dog Days of Summer, a phrase which – according to the Merriam-Webster Idioms Dictionary – refers to “hot, sultry summer weather; also, a period of stagnation…the period between early July and early September, when Sirius, the so-called Dog Star, rises and sets with the sun.” In this spirit, we’ve collected some of our favorite dog books to train or laze about with… FEATURED TITLES How to Raise the Perfect Dog by Cesar Millan, Melissa Jo Peltier From the bestselling author and star of National Geographic Channel’s Dog Whisperer, the only resource you’ll need for raising a happy, healthy…