So… Hades, the god of the Underworld, named his dog ‘Spot’?
Yes. I’ve read this elsewhere.
In this famous Greek vase Kerberos isn’t depicted as spotted, but the snakes attached to him* are.
Yahoo Image Search…&p=Herakles+Kerberos+vase+painting&oid=8396beefa22305526dab90dee70cb6ef&fr2=&fr=yfp-t-901&tt=Seneca%2C+Hercules+Furens+46+ff+%28trans.+Miller%29+%28Roman+tragedy+C1st+A.D+…&b=0&ni=288&no=11&ts=&tab=organic&sigr=12c73cms4&sigb=13v66f45e&sigi=12l76hu86&sigt=129djiefp&sign=129djiefp&.crumb=KF3D/tqJmTZ&fr=yfp-t-901
*Snakes are a common attribute of “underworld” figures. I know of no text that describes Kerberos as being covered by snakes, Medusa-like, but you can see it in depictions like this