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April 5, 2022

What do you get when you breed a wrinkly-faced Bull Dog with a giant Mastiff? 

A gentle giant known as a Bullmastiff. 

Although Bullmastiffs are physically imposing, they are unbelievably loving and patient. 

Here are some facts you may not know about Bullmastiffs.  

Breed History:

  • Bullmastiffs were originally bred in England to be guard dogs. They were brought to the US by John D. Rockefeller to guard his country estate in Tarrytown, New York. 
  • Instead of barking to scare away an intruder, Bullmastiffs quietly track the suspect. When the opportunity presents itself, this dog will apprehend and secure the poacher until help arrives. 
  • Many Bullmastiffs have retired their guard hats and are now simply companion animals. 


  • The Bullmastiff has dark hazel eyes and a black nose. It also has V-shaped ears that hang downwards.
  • Bullmastiffs can be 25-27 inches tall and weigh up to 130 pounds. 
  • They can be red, fawn, or dark brindle.


  • They attain reproductive maturity after 18 to 20 months.
  • The average litter size is 8. 
  • Breeding the Bullmastiffs needs to be done carefully, ensuring that they do not inherit genetic problems.


  • These gentle giants rarely live past 10. 
  • They can have health issues such as hip dysplasia, twisting tummy, bloating, breathing issues, and eye problems.
  • Although large and muscular, Bullmastiffs have a moderate energy level, so they do not need much exercise.


  • The Bullmastiff is very submissive to its human family so long as proper socialization has occurred. 
  • Given their natural guarding tendencies, this breed is very protective of its family. 
  • Bullmastiffs prefer to live alone, and they do not like cats and other dogs.
  • They cannot live in extreme weather conditions and are sensitive to both the heat and cold.


  1. Thomas W Hall

    So the question was: which NFL team has a Bull Mastiff as a mascot???
    I did not see the answer in this post…….???

    • Ralph Thompson

      I believe it is the Browns

  2. Cougar

    I believe it’s the Cleavland Brown’s

  3. Corvair Jim

    Yeah, I was wondering about that NFL team, too. How about giving us an answer? “Inquiring minds want to know”!


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