You should hear the big bitch whine when my Dingo is near her. It’s a treat.
Yes, if a mastiff wants something, and does not get it, it will cry out loud until you give in. At least, mine will.
Never let a mastiff puppy have something that you will deny to him/her later, i.e. sleep in your bed, lay on the couch, eat human food, taste whipped creme....