Yes. They can snap off if an animal has been in a fight, or got their horns stuck and panicked.
Yes, but they are antlers, not horns. Horns on cattle and other ungulates are not shed like antlers are.
No not usually
They are horns.
No all cattle of any sex can grow horns. It is not limited to males like deer to have the ability to grow horns.
Because they were bred to have large horns. It's all in the breeding.
A steer is merely a bull that has been castrated. Those cattle are usually fed out as food, and are de-horned manually to prevent injury to them, the other cattle, and human handlers. Some breeds are born without horns, whether male or female. Both male and female cattle can have horns.
Horses don't have horns. Cattle, goats, and sheep have horns.
Polled is a term meaning the cow has a gene that they will have no horns. Unpolled is the opposite; they have the gene to grow horns.
The Ankole breed have the largest and most impressive horns of all cattle. There are 5 strains of Ankole cattle: Bahema, Bashi, Tutsi, Kigezi, and Watusi. The Tutsi strain of Ankole cattle have the largest-sized horns of all Ankole-type cattle, however the most well-known strain of Ankole cattle are the Ankole-Watusi, which are called the "kings of cattle" because they are an ancient breed with ancestry tracing back to at least 6,000 years ago.
Cattle do not have to be killed to harvest horns. However, harvesting horns from an adult animal that does not naturally shed their antlers / horns (such as deer) is a painful and traumatic experience that is essentially an amputation. Usually, horns taken from cattle (such as farm raised Water Buffalo) are harvested at the time the animal is slaughtered for meat.
Some do, yes. They can be both polled and horned.
No cattle have antlers. They have horns. You could be thinking of moose or elk, which are part of the deer family and have antlers.