This story is about sheep and sheep dogs but nothing to do with Arizona but I suppose it could have occurred here.
One summer morning a man driving a car came upon a great flock of sheep coming towards him. The driver being courteous pulled over to allow the sheep to easily pass. Watching with interest, the shepherd, his dogs and sheep just kept coming toward him. As the flock passed him while he was sitting in his car, he became courteous about the sheep.
Stopping the herder as he went by his car, he asked the shepherd what would happen if he met a flock of sheep coming in the opposite direction? The man replied that both herders keep driving the sheep in the direction you want them to go and the one that has the best dogs gets the most sheep!
This is just one of many stories found when researching sheep industry that is just too comical not to share!
Hope you enjoy!