hmmmm....he looks like a gray haired Ringo Starr...you might have to ask your dad about that one! LOL...We called those mop tops back in the sixties!!

It is quite the look.  When I first got him all his fur had the brown tips but since it grows continually I have to trim him and so now the brown is just on his face and tummy.  He hates getting a trim so i don't do it often, hence the mop top!