So, I'm just curious. I have a purely red/white corgi, but a while ago, I noticed that he had some black hairs speckled in his coat near his withers. So I pulled one such hair out and inspected it. Turns out that the bottom half of the hair is jet black, but that in the middle it turns completely white, and then gradually turns to his reddish coat color by the time it reaches the tip. Just out of curiosity, does anyone else's corgi seem to have these weird strands in their fur too?