Your story reminded me of my dog who was very shy when he was a puppy. I have tried many types of training and advice I've heard from others I've tried everything I knew, my puppy after all that was shy. Of course, after a while I gave up when I saw that nothing changed. I do not want to complain because I have no reason why I love my dog I love it. on the other side after all, I learned that there are often Mastiff behavior as a puppy
Mastiff Care Information
In order to ensure a happy, healthy, Mastiff, you must first understand a bit about the origin of the breed. Mastiffs original jobs involved guarding of kings and other dignitaries. Some, like the Bull Mastiff, fought bulls for the entertainment of others. Therefore, although Mastiffs make excellent family pets, they can be cautious of strangers, and will need the family to first "introduce" the stranger. Mastiffs require a regular daily walk, not more than the average dog, due to a low amount of energy, and mellow personalities. In fact, often times, you must convince your Mastiff that it's exercise time because they can become quite the couch patato!