All my beasties have had strong prey drive (not too far down the line from African heritage) and it has taken a lot of work to partially control this. If you can find a special treat (takes trial and error but piece of steak maybe) that the dog gets ONLY when responding to "come", whistle, or whatever you use for recall, and work that relentlessly and regularly, then you can develop the "whiplash turn" (as described in "Control Unleashed"). BUT this takes a lot of consistent work and finding the right treat isn't easy. My 2nd male would instantly turn away from a squirrel when I used the whistle (even when on a dead run after a creature) but I have yet to find the right treat for my current female who sometimes will respond nicely. I'm still working on her.
