I work with dogs, know people who work with dogs, have talked with many vets and vet techs.
They all recognize that different dog breeds have different temperaments with some being much more likely to bite than others, and a bite from some being much more serious than others.
Every vet I have talked to has a “worst offender” breed list, of dogs they know that are likely to bite, and the bite from will be severe.
Yep, no denying it. But you cannot find a vet that declares a ‘vicious breed’ thats respected in their field.
Thats my point.