Amazon takes an extra 20% off first order subscriptions of Greenies or Pedigree Dog Treats, already marked an additional 5% off, when you check out via Subscribe & Save. (The links provided clip a special discount coupon, although you have to manually select Subscribe & Save on the product page.) Plus, all these orders receive free shipping.

Note: Be sure to cancel Subscribe & Save after your item ships to avoid being billed for future shipments.