I just read about noses that have lightened up in areas...it's not considered a pigment loss...it said it's more or less a result of spending less time in the sun and would darken back up in summer months. Kinda like a suntan. I don't know if that's the case with your puppy, but Reese's nose looks like he rubbed some of the color off...right in the center like along the crease.
__________________ Deb, Reese, Reggie, Frazier, Libby, Sidney, & Bodie |