a freind ov mine had a dog that used to do the same thing what he done was took a few ferreted rabbits and let the dog chase them 1 by 1 ov course lol and when it caught it, it used to rip them to bits so he used cheses to hand feed (treat) the dog making it calm and gentlel when takein treat he said it was just to much excitment to catch quarry also you could take it for a long walk so its tiered then try it with a skin and see what its reaction is then try your own methods. i always find its better to slove a problem with my dog when its tired seems to take more in atb jedandlevo