They have as good of a chance as any to make a catch dog. I would handle up the dog agression and dump em on pigs asap
x2 I got an american bully,he is 6 months old and he has only seen a hog from the outside of a pen and he just went nuts,there was a 100 lb boar in there and I bet he wouldve tried catching it ,if i wouldve thrown him in there...while my main catchdog rite now didnt want nothing to do with a hog till he was a year old.every dog is different of course ,but if I was you I would try em,I mean like the rest of the people said looks dnt make a catchdog but like Grant said they have as good of a chance as any to make a catchdog..just my .02!