Beefmaster is a breed of beef cattle that was developed in the early 1930s by Tom Lasater from a crossing of Hereford and Shorthorn cattle with Brahman stock. The exact mixture of the foundation cattle is unknown but is thought to be about 25% Hereford 25% Shorthorn and 50% Brahman. It was the second new breed of cattle registered in the United States. The original intention was to produce cattle that could produce economically in the difficult environment of South Texas.