Footrot Flats/WMG

The Dog is a canine Time Lord.
He refuses to let his name be given for the same reason every other Time Lord does. His TARDIS is his water tank.

This comic will be syndicated in every newspaper in America soon...
Wait, why are you laughing?
 * Well, it was and probably still is in the Farmer's Weekly in the UK and RSA (and probably Aussie), so that's not too far off the mark.