I understand **** happens. You and I disagree on the amount of effort the State trooper put forth to save the horses - 19 mins is not that much time. I don't know if the trooper is just stupid that he can't get a horse to move? Either way, if your dog was on a highway like that, I sure hope they would stop traffic and save it instead of shooting it.
If my dog were on the highway she would be dead because no one would care. Hitting her would be an inconvenience but not dangerous. At the end of the day it would be my fault.