When the weather finally turns warm & sunny, it's kinda mean to leave your backyard-lovin' pets indoors! Stock up on toys, crates, dog runs & more at Petco , 'cause they've extended their Memorial Day 20% off sitewide sale through Thursday! Plus, you can snag free shipping on orders of $49 or more with coupon code affsitewide49ext. Coupon & sale now expire 06/02/2011. (Just don't forget to get some pet shampoo for the inevitable Fido-meets-mud escapades...)