I found out about this through Dozer and Coop and his best mate, The Daily Corgi.
"For every blog post about the campaign between now and June 30th, Pedigree will donate a bag of food to a shelter via The Rescue Bank. Want to know more? Check out my post, get yours written today and join the fun of our Blog Hop!
Yep, it's THAT easy, and some homeless dogs will thank you with a waggly tail and a hopeful woof. Need more incentive than that? (As if!) Write the post, include the URL in a comment below (before July 3) and I'll enter you in a drawing for the Pedigree "dogs rule" swag I got at BlogPaws 2012: a snappy set of covetable items, including a tote bag, ball cap and collar, all in midnight black, emblazoned with "dogs rule" in canary yellow. You know you want 'em!"
Start posting, every paw!