This website offers far more information than I could ever hope to put in here without either:
a) boring you to the point of keyboard destruction, or
b) hopelessly losing you.

So instead I offer you a link...

Peruse it at your leisure!

Bendegeit Mastiffs - Proud members of the Canadian Kennel Club, Canadian Mastiff Club & Mastiff Club of America.
All contents belong to Bendegeit Mastiffs & may not be copied, modified or reproduced in any manner without express written consent.