Back in meieval times it was only the nobility who were allowed to own greyhounds and the penalty for a commoner killing a greyhound was death to the commoner. Adam's commnet about the German baroness who lived near JG7's airfield and who owned greyhounds is absolutely no surprise to me. Nor is it a surprise to learn that the Commander of the unit chose the greyhound as the unit's mascot. As I said a little earlier they are really fast (the only ground dwelling animal faster than a greyhound is the cheetah). A greyhound can also accelerate from 0 to its maximum speed of around 70 km/h in about 6-9 metres so when they're 10m out of the box they are at full tilt. What an appropriate symbol and mascot for the world's first jet fighter unit to have. I'm not sure if there's any comparison between a greyhound's temperament and that of the Me 262 though.
Regards,
RHB.