A steer is a male bovine that has been castrated before reaching sexual maturity. Castration is usually done when the bull is a young calf, and it makes the animal more docile and less aggressive than bulls. Steers are primarily raised for beef production, and they tend to be less muscular than bulls. The size and weight of a steer can vary depending on the breed, with their weight ranging from 450–1,360 kg (1,000–3,000 pounds) . Some breeds of steers may have horns, while others may be genetically polled (hornless) or dehorned at a young age.