 Cattle were raised at the farm . Eisenhower would often poke the rump of a bull with his shotgun to show what quality of steak the animal would eventually produce , alarming the Secret Service agents that were protecting him . Once , while barbecuing ( something he loved to do on the farm ) , he made the mistake of announcing which cow he was cooking . As it had been the favorite cow of his granddaughter Susan Eisenhower , she was brought to tears . 
