For centuries cattle has been used for both for a source of food and sometimes as a form of currency, the cows we use today are much larger than they were hundreds of years ago only because of genetic mutation, but some farmers don 't mutate their cattle .The size and weight of a cow are highly dependent on the sex; mature males (also known as Bulls) weigh between 1,000–4,000 pounds and mature females weigh between 800–2,400 pounds. Both males and females have horns. Although these horns may be short in many breeds, in other breeds, they can grow to be spectacularly large, such as the Texas Longhorns and African Ankole-Watusi cows. Some breeds are genetically polled (hornless), and many other cows may be dehorned (that is, have their horn buds