Well, the 'norm' for the breed is to be a little testy with other dogs. This is not RIGHT IMO, but it is common to see poorly temperamented ACD's. Getting a dog from a breeder and doing lots of early socialization can help. I always suggest even when getting an ACD from a breeder that you ask if they allow all their dogs to run together. I personally wouldn't buy from someone who was knowingly breeding DR or DA dogs.
It doesn't say anything about it in our standard as far as the DA goes, but bull terriers/pittie type dogs went into the creation of this breed. As long as the breeder is doing their part and the owner properly socializes the dog, there "shouldn't" be a problem
It doesn't say anything about it in our standard as far as the DA goes, but bull terriers/pittie type dogs went into the creation of this breed. As long as the breeder is doing their part and the owner properly socializes the dog, there "shouldn't" be a problem