therein lies the point . you just described bulldogs either in catch work , schutzund , or hog hunt as a PIA. these are high drive so called performance bred, dogs, great athletes and superb catchdogs, yes, but i am not saying that is a proper bulldog. it is a crossbred dog , and a good cross for its purpose, but what im calling a proper bulldog is not like a large pitbull. i knw the difference , i have owned/kept many pitdogs, and i have seen with my own two eyes what an honest bulldog is in the white english. ive seen their temperment, and it is about the same as a LGD, so shutzund or hog pen and all doesnt prove anything, extaordinary. with a white english in a hog pen, i would be more impressed to see it work the animals to move or bunch them than to catch an already caught hog. im sure catahoulas do this just as well or better, but they cant whip an aggressive bull that your trying to move or handle,and guard from predators , and not attack the farm animaks like some americans , thats got too much pit mind. this proves they have been bred and culled hard for a long time when all over the south all these dogs can and do these same chores. and yeah a proper rott should make a good one as you mentioned, the problem is you cant get them here that do this consistantly, like a snake hatching out of an egg, ready to go, as catahoulla bays , and a bordercollie herds.