No, I didn't see the dog that was responsible however I have a good idea of who it was. We have had trouble with the same three dogs for awhile now.
Before we moved all of our rabbits into the barn we had our bucks in outside cages. I saw two of the dogs out there under the cages and barking at the rabbits. We had set the cages up high enough to be easily accessible for us to get to and clean and also thinking to keep them high enough off the ground so that wild critters would likely not bother them. It was not the wild critters that we had to worry about. I ran outside and the dogs took off however the damage had already been done. One of my rabbits (a red mini rex buck) had lost his entire front leg through the bottom of the wire. It was completely ripped off at the shoulder. They had managed to pull his leg off through 1/2" x 1" wire.
I have talked to our neighbors about it (the ones that own the dogs) and they are very non-chalant about the whole thing. Their response is - if you shoot them, you shoot them. I love animals of all kinds and my fear is not shooting the dogs - but shooting them and not killing them straight away. I hate to see animals suffer. I don't want to be forced to shoot any animal but I am tired of having to bury mine so theirs can run free.
In our county we do not have any sort of animal control either which does not help the situation. It is frustrating at best.