PHOENIX, 2016-Jul-12 — /EPR Retail News/ — For the second year in a row, PetSmart is helping pups and their pet parents beat the heat on National Ice Cream Day with free Doggie Ice Cream Sundaes at all PetSmart PetsHotel locations on Sunday, July 17. Compliments of PetSmart PetsHotels, pet parents can bring best friends in…