If you're going to knock them off…
…you knock off the best, right? I’ve always loved the Le Chat Noir poster with its masterfully-painted cat. He stares you down and forcefully demands your attention in ways that cannot be refused. So I said ‘feck it’ and totally ripped-off the poster for my own ends:
Some more work is needed on layout (it needs a big black cat) and typography, but this isn’t too bad for two hours of fooling around. Look out for it at a PetsSmart and Petco near you soon!