I had a terrible experience with my Huskey and a deer a couple of weeks ago. Walking through the lanes we came across a deer that had got caugt up in the blue nylon string that the farmers put round their fields (i'm in France) it took me ages but i managed to free the deer wich promptly turned and rushed at me, My dog Blue went for the deer and the deer managed to get his antlers under Blues collar and twist it tight. I wrestled the deer to the ground trying to free Blue, poor Blue had blood coming out of his mouth and is eyes were going red, so trying to get the antlers out whilst keeping the antlers away from his eyes.
I was screaming, Blue was screaming as was the deer ! it was awful. I finally managed to free Blue and lucky he was ok.
I changed his collar (the old one didn't have a buckle) and now go out with leatherman knife in my pocket. If it happens aain the deer will end up in the freezer!
My hands looked like raw meat for days after and the bruises a lovely sade of black and blue.