Here is one to start it off.
A couple of years ago, I was home with my stepson (11 yrs old and in his room) and our Llasa Apso (on the den couch, sound asleep). I was watching the Golf Channel in the den (with the dog) and they were talking about finishing your follow through. I had an old 7 iron leaned against the fireplace, so I took it up to practice making a full follow through while brushing the carpet at the bottom of the downswing. This process was going along nicely until the Llasa awoke and stepped into the swing path of a nicely swung 7 iron. It caught him right in the side of the head and he went down like a stone.
I immediately dropped to my knees expecting to find him dead. He was breathing shallowly, but his eyes were fixed and he was totally immobile. My first thought was as to whether or not I could pack and be gone before my wife returned from the grocers. But, I came to my sense, called for my stepson and phoned the vets. He came down and opened for us. We set off for the vets with me driving and my stepson holding the still immobile dog in his lap. The dog came to just before we got to the vets and promptly threw up all over my stepson and my car.
Once in the vet's office, the dog was pronounced sound, but he had a broken tooth that would have to be dealt with by surgery. $400 and a lot of diamond jewelry later, I was back in the good graces of both the dog and wife. I did learn a valuable lesson, however..... one cannot make a full follow through if the object being hit weighs over 20 lbs.