They'll go after whatever you let them go after. I've been teaching "Leave It" with the use of a collar and at year 1, I expect 100% compliance. Youngest just did his VJP test and when the chukar flushed and he took about 8 running steps after it, I commanded "Leave It" and he immediately stopped and returned to me. Collars not allowed on test days of course. So the desire is there but if you are going to run one, you'd better have strong control on them. Older one will jump deer and ignore them now with no issues.
That said, a porky can deliver a lot of damage before you even know what is going on if the dog is working at a distance. Have had other breeds get involved with them too though.
"leave it" command very important.
