$1.50 Off one bag of Purina Dog Chow Small Dog dog food, any size (Plus a Walmart Deal) Posted by Harbor Master on 7 May 2017, 4:43 pm Tweet Expired Ex. 30 days from print(Print limit is two) Click here to print $1.50 Off one bag of Purina Dog Chow Small Dog dog food, any size Walmart sells the 4 pound for $4.97. $3.47 after the coupon.