i have a Black lab/GSD male, hes a year and four months, and has always been solid black, exept his back legs foot where his toes are white. now hes getting more white not much but little single white heirs around his body and face. ive owned him seince he was 2 months and this started in the past 3 to 4 months. is it posible he will change his coat? i know my GSD pup whos ten months has in her hips and thighs from black to tan/black, i was just wondering if anyone else has delt with it if its posible?