Hi all! I have a 3 month old German Shepherd puppy. His Brother and sisters were the classic black and tan. But him, as you can see, is black with white paws and a white chest. He's so cute to me I had to get him. He's a good boy and though it does not matter, do you think he is not pure bred? Is this normal? or even rare? Would apppreciate any feedback! Thanks yall!