My career really started when I was 13. My great grandfather had a ranch in Young County, Texas.
He owned about 400 head of cattle, all Hereford, and about a dozen head of horses. He calved in the fall, hopefully after frost. Earlier calving or a late frost insured the newborn calves would be infested with screw worms, the maggots of tropical flies that ate living flesh, which would set up housekeeping in the fresh, raw navels of the baby calves.
The adult flies…