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]"

Maybe give him a real one (unless he jas food allergies of any kind of course)

My friend's corgi (Larry) has the same donut and it's the only toy of his that has lasted trough the years