hI ALL IM NEW TO THIS SITE I AM GETTING A PUPPY IN A FEW DAYS IM A LITTLE CONCERNED ABOUT IT BEING PURE THE MOTER IS ON SITE AND THE PUPPIES LOOK PURE BUT ONE DOESNT HAVE A REAL DARK MASK SHOULD I BE CONCERNED I KNOW SOME GET WHITE AND SO ON BUT SHE IS A BRINDLE WITH A REAL LITE BLACK MASK CAN THIS BE NORMAL