Petco has Science Diet bags on sale this week. Pair with the 5 dollar coupon you can print after signing up for the 3 bag challenge. Prices will range on what size bag you purchase.
Kmart is once again double coupons in select areas. Pedigree items are on sale this could include jumbo bones and denta bones. Combine with 1.00 off coupons found in the sample sizes or previous inserts(not sure which one it was but it was in Nov/Dec.). Also, you can pick up Goodlife dog food for around 1.99 after double coupons if you have the 1.50 any size coupon.
Target has their brand dog treats on sale for 10% off this week. You can get a box of milkbone like dog bones for around 2.00. Not a bad price, seeing as Milkbones rarely have coupons or sales in my area.
Keep an eye out at your local CVS for the squeek toy stocking stuffers. Many stores still have Christmas clearance at 90%.
Cost Plus World Markets have select dog items 50-75% off. They have a cute little dog shampoo/spray kit for around 5.00. I wasn't aware they had a dog section until yesterday. Remember to keep your eye out even in stores that you don't consider for pet needs. You never know what you might find.