Bullmastiff

Question
Hi my Dog (Stella) a pure bred Bullmastiff has started to grow more hungry how much should i be feeding her each day currently it's about 450-500 grams per day her weight is 6 stone exactly and she is now 2 years of age

Answer
I can't tell you how much you should be feeding.  I can give you a link to a guide to determining if she is getting the right amount, http://www.longliveyourdog.com/twoplus/RateYourDog.aspx  Evaluate her and adjust her chow as needed.  if her appetite has suddenly changed, you might check with the vet. You might also have the vet confirm your judgment of her condition.