Originally Posted by *blackrose
That is one of the reasons I'm leery about any of the herding breeds...the predisposition towards reactiveness. I didn't know if the dog's line would influence that or not.
It does influence it for sure. However, you can still get those traits in dogs who's parents are very sound because it is within the range of temperaments for the majority of herding breeds. Meaning, the tendency is there in those breeds, you try to select against it, you try to socialize and train against it but in some dogs, it will still be there.