Greetings from Thompson Angus! Thompson Angus was started in 1972 and began A.I. breeding in 1978. Take a look at our selection of bulls as they are out of the top A.I. sires of the breed and out of dams backed by many years of A.I. breeding. The bulls are taken from the top 30% of our calf crop each year to ensure all bulls are of the highest quality.