Urban legend or not, it's a good story. I'd like to do this around here, but I don't think spray paint would be safe for the dogs and I don't own any dog clippers. I've wanted to dye or shave words into the hair of animals for some time now, actually. Original plan was to dye white hamsters "all manner of brilliant colour" and attach them to helium balloons of similar color, with note on back of cute Hamtaro-like tag which reads: I am your new magical friend from a far away land! Take good care of me please!