Hi all. Does anyone know what type of dog a Mastiff is? I mean what category it fits into, like: hound, working, hunting, toy???? I wish I could find a list of the "categories" of breeds. I am trying to learn all I can about dogs right now before we get our next dog. My five year old son is allergic to cats and that is one concern. I am trying to find out how often a Mastiff moults or sheds his dander because there is a Mastiff/mix puppy that we are all in love with. We want this dog so badly but I don't know how allergy friendly he is. Any help is appreciated!