Worked with his father training horses for Disney TV on the "Spin and Marty" and "Zorro" series.
Developed polio as a child and his father used strenuous strengthening exercises as a successful form of therapy for his son's condition.
Randall was a two-time winner of the Patsy Award (once the animal trainers' Oscar) and recipient of the Humanitarian Award in 1982 from what was then the Society for the Prevention of Cruelty to Animals Los Angeles.