PHOENIX--(BUSINESS WIRE)--In partnership with Google Express, PetSmart®, the largest specialty pet retailer of services and solutions for the lifetime needs of pets, has been serving the on-demand delivery needs of pet parents for nearly a year with its same-day service in six cities across the nation, serving thousands of store-to-door customer deliveries per week in San Francisco, Los Angeles, New York, Boston, Chicago and D.C. Today, the two companies announce that they are expanding with ov