How do you keep a Bullmastiff's protective instinct under control? Mona Lindau-Webb offers a blueprint for a well-behaved Bullie. 

A correct and ideal slightly undershot Bullmastiff bite.
A long-time breeder and judge discusses what's acceptable -- and not -- when evaluating a Bullmastiff's bite.
Oh, dear! Binky the fawn bonds to a litter of Bullmastiff puppies
Bullmastiff and Dogue puppies — equally cute!
Bullmastiff and Dogue puppies — equally cute! Dogue photo by Sanna Sander.
At first glance, the Bullmastiff and Dogue de Bordeaux might seem very similar. Which makes their many differences all the more important.

Two Bullmastiffs lived at Colonial Williamsburg in the early 1940s, presumably guarding the restored colonial village. Did they patrol its perimeter as their brethren did farther north for the Rockefeller family?
In the 1940s, two Rockefeller-bred Bullmastiffs arrived at this colonial town as a canine anachronisms.
Did the Rockefeller family and early Bullmastiff breeder John Cross ever cross paths? Not likely.

The 1948 Associated Press story that created some confusion about which Pocantico was which.
The truth about the Pocantico kennel name: Despite the hype, those long-ago Bullmastiffs were not Rockefeller reared.
Bifid, or split noses, surface occasionally in Bullmastiffs
Bifid noses – also called "double," "split" or "cleft" noses – are undesirable in Bullmastiffs and other breeds, not least of all because they have been associated with more serious midline defects like cleft lip and palate.
Anne Colliass, daughter of the late Harry and Beryl Colliass, has been an integral part of the Oldwell Kennels in the U.K. for much of her life. Here, she talks about her family legacy, setting priorities in breeding programs, and advice she'd give to those starting out in Bullmastiffs today.  
Kay Reil of Bramstoke Bullmastiffs reminds that timing is everything when rearing young Molossers: Early socialization is a must.