Breed is an Olde English Bulldogge:

https://en.m.wikipedia.org/wiki/Olde_English_Bulldogge

Basically using cross breeding to resurrect a bulldog breed from before inbreeding ruined them.

“The result was an athletic breed that looks similar to the bulldogs of 1820, but with a friendly temperament, fewer health issues, and with longevity reaching into the teens. U.S. researchers have said the Olde English Bulldogge is a “viable candidate” as an outcross on which to rebuild the Bulldog; a breed that genetic studies have suggested is so inbred that it “cannot be returned to health without an infusion of new bloodlines.”[4]”