Our foundation stock comes from, Mill Creek Mastiffs.
We at Ducky's & Mammoth Mastiffs, breed for quality, health, longevity, sound temperament, and conformationally breed to the; Old English Mastiff Club Standard. WE ARE ONLY STUDDING OUR MALES OUT and NO LONGER BREEDING FOR PUPPIES. Frozen Only. If you wish to know who will be using our boys for breeding for a puppy just email us and we will get back to you as soon as possible.
You will not find a pedigree anywhere in the world with old time known dogs like what we have.
We will be there for our puppy buyers as long as you need us.....
We reserve the right to refuse sale at anytime without further explanation.
No graphics, pictures, or content on any of the pages contained with in this site maybe copied, modified, distributed, produced, published, or posted without the express written consent of, "Mammoth Mastiffs".
Established in Mastiffs since 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
All rights reserved.
To Whom It May Concern: There has never been a dog bred by or sold by Mill Creek Mastiffs or Mammoth Mastiffs or Duckys Mastiffs that tested positive for cystinuria to my knowledge. If anyone knows of one contact me as soon as possible. Our Dogs are DNA tested free of cystinuria!!!!