I HAVE A 4-5 MONTH OLD BLUE HEELER BORDER COLLIE MIX. I’VE BEEN FEEDING HER ZIGNATURE TURKEY. SHE USE TO EAT IT ALL, NOW SHE DOESN’T EAT HALF OF IT. I AM LOOKING FOR A GRAIN FREE DOG FOOD. SHE HAS ALLERGIES CONSTANT SCRATCHING AND BITING, SHE IS A SHELTER PUPPY, SO REALLY DON’T KNOW HER BACKGROUND. ANY SUGGESTIONS WOULD BE GREATLY APPRECIATED.