Sorry to bring this one back but I had a similar experience. We had a coyote rush in and knock over our decoy while turkey hunting a few years back. I wanted to blast it but the guy who took me said no. I should have killed that dog but I was a guest so I did what I was told. Not next time though.
We picked up the decoy and it had slobber and tooth marks on it. It was really cool to watch, wish I had it on tape.