Headquartered in Phoenix, Ariz., PetSmart Inc. offers a range of employment opportunities in the retail, from Cashier to Dog Bather. Median pay for PetSmart Inc. workers sits around $9.72 per hour, and overtime compensation can push that up to $18.30.For the most part, employee paychecks at PetSmart Inc. fluctuate depending on your city; how long you've been working and what you do at the company also matter, but to a lesser degree.y state, the highest compensation levels appear in Arizona, where the average salary is $14.09 per hour. Average pay is $11.33 per hour for those with five to nine years of experience.