Petco is a leading retailer of pet supplies that are sure to make Fido\'s tail wag, including food, health and grooming products, bedding and toys. Petco deals include free shipping offers, sitewide sales, \"buy 1, get 1 free\" specials, and sale-priced merchandise. You can use Petco coupons online or in the checkout aisle, and shoppers who join the Petco rewards program earn 5% back on every purchase.