For new customers only, Wag.com
(a sister site of Diapers.com and Soap.com) offers 30% off
one item, including dog food, via coupon code "WAG30". (A maximum discount of $20 applies.) That's the best percent-off coupon we've seen from this merchant, which sells pet food and supplies. (We saw 20% off, also for new customers only, during summer 2011.) Shipping adds $4.99
, or orders over $49 receive free shipping.