My dog got lost last night! Help me!?

Call all of your local shelters and tell them what he looks like, if he ends up there then they will call you. Post signs EVERYWHERE, if someone has him make sure they see the signs and they will return him to you. look around wherever you take him most (park, neighborhood, store you mentioned). Chances are that he will be around somewhere that he is familiar with. Good luck! I hope you find him!