Oh where, oh where has my little dog gone?

Oh where, oh where can he be.....

Baxter ran off yesterday. He never stays gone this long. There was a storm after he left, and he goes absolutely batty when it thunders, so he must have gotten lost while running. We're just keeping our fingers crossed that someone notices him and calls us. Strangely, for the last 8 years, everytime he gets too far from home, someone finds him and calls within a few hours. I'm afraid that could be because he really sticks out. i.e. Runs down the middle of the road. But it has never taken this long for him to either come home or to hear from someone.