Corn does not make up 100% of the diet. The diet of cattle is usually a mixture of many feeds, mixed in the correct proportions to give the animal what it needs for its stage of growth or production. So to wrap it all up, yes cattle do eat corn, many other cereal grains. They love these feeds [video].
The Tongue. The tongue is a muscular organ in the mouth with several functions. It is attached to the bottom of the mouth by a membrane on its underside called the lingual frenum. The top surface of the tongue contains papillae, the tiny nodules or bumps that include the taste buds. One of the functions of the tongue is taste, but it also facilitates chewing, digesting, swallowing and speaking.
The tongue is a muscular organ. It is covered with a moist and pink tissue called the mucosa. The tiny bumps on the surface of the tongue are called papillae. Embedded within the papillae are several thousand taste buds that are responsible for detecting sweet, salty, bitter and sour tastes.