American Mastiff Q&A
It all depends on what type of dog you want for your first one we have an AM and absolutely love her. They are very trainable and affectionate animals but as with ANY dog out there if they do not have someone in there home that leads them they will assume the role as leader themselves. Are they a fiercely dominate breed that will challenge you every day? No. Just remember they are very big and be prepared for your coffee table (we no longer have one) to be swept clean every time they enter the room.