Yes Occy,as Fedra said , some breeds have been bred to nurture the DA for many years.
But DA is just that. Dog Aggression.
It is not all round aggression.
Certainly not what most would label as an 'aggressive' dog in broader terms.
In a black and white answer ( but remember-life/situations are rarely black and white) yes , my breed as a whole are known for thier DA.
It is there , it is genetic.
This does not mean that every dog of my breed will automaticly be an absolute raging attacker ,in fact they are often not the instigator , but will certainly finish it if provoked.But they are also one of the most stable ,loving dogs there are for a family
It simply means owners of this breed must be aware that it is part of the dogs make up and manage accordingly,not set the dog up to fail
The Sharpei is another dog known for its DA tendencies.