USA promotion at petco®. Get $5 off your purchase of $25 or more. You will have to be a signed up member of the PALS scheme and present your card when getting the discount. But if you go to petco® sometimes then you don't have to go out of your way to claim your discount. Obviously for discounts to work you should not have to work to get it!
This promotion is for 2 days only: 3rd and 4th December 2011. The coupon is printable and this is the page to go to.