There have always been questions about black brindles and what makes them brindles. My boy, Johnny, on his mother's side, carries brindle from the sire (his grandfather). his grandfather has thrown brindle. The grandfather came back from somewhere basically bald-with no striping on the skin.(that may settle the issue of brindles having different skin colours-at least in my mind)
However, I noticed in the sunlight one day, Johnny had striping. Johnny lookes totally black. Here is a normal pic of him.
Now, here are some pics I took of his body yesterday after the light struck him again. No, the hair is not thin. I don't know if you can see it or not, but the striping is very light. Any educational comments?