Your dad was probably nearly as panicked as the dog, and that was part of the problem.
Bottom line is: dad lived, dog lived, no serious injuries even though there were a couple of lives momentarily in danger.
No hit, no harm, no foul.
My dad's only problem was that he knew that his dog was going to most likely bite him, etc because he wouldn't understand my dad was helping him. My dad knew he was going to be taking several bites for the team in order to get the chicken bone out. Growing up on a farm teaches you that animals, no matter how wonderful they are, are animals with an animal instinct. Fight or flight instinct kicks in when they are distressed. I speak from experience with that.