$2 off any One Bag of Purina Dog Chow Small Dog Brand Dog Food ($2.97 at Walmart after the coupon) Posted by Harbor Master on 9 May 2017, 5:46 pm Tweet Expired Ex. 30 days from print (Print limit is two) Click here to print $2 off any One Bag of Purina Dog Chow Small Dog Brand Dog Food Walmart sells the 4 pound for $4.97. $2.97 after the coupon.