He actually gives the cat panic attacks, which sounds really silly and looks adorable but it's rather pitiful. He doesn't hurt the cat intentionally, if I tell him Leave it or Come he runs right over but runs right back over to him. My house is a chorus of "Leave it" some days, the cat really has only gotten scratches but Vader seems to be aloof to what the claws mean. He's gotten one fish hooked through his lip, as soon as I got it out he was right back to chasing him. He will sniff out the cat and look for his hiding places just so he can play with him. I don't want to kill his prey drive completely, but channel it since he's trying to train for SAR. He doesn't chase other small animals, great with small dogs, it's seriously just cats he is fixated on.
Completely off topic, but I never realized you're in my little part of the woods.