$1.50 off One Bag of Purina Dog Chow Small Dog dog food, any size Posted by Harbor Master on 20 August 2017, 4:55 pm Tweet The Coupon Expires 30 days from print (The 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 Purina Dog Chow Small Dog dog food for $4.97. $3.47 at Walmart after the coupon!