Naturally hornless animals or livestock are called polled livestock. Polled livestock can also be in reference to livestock that have been breed to be hornless. Mulley is a slang term for hornless animals and livestock.
polled
polled
Acornuate is the medical term meaning hornless.
A hornless uniocorn is called a 'pegasus'! It is a winged horse! x
A black Angus is a type of black, hornless cattle from Scotland.
Poll Dorset
muley
A polled goat is hornless.
The trait of being hornless can be harmful if the cow is in an area where it may have to defend against predators. If the animal is aggressive, having no horns can be an asset to the handler.
The Paraceratherium a type of hornless Rhino.
Live birth; baby narwhals are hornless.
The Polled (Hornless) trait is caused by a dominant allele in domestic cattle. From the standpoint of many breeders the trait is a very favorable one, eliminating the need for dehorning andresulting in fewer injuries when new cattle are mixed into a herd. In cattle (even domestic varieties) that have to fend for themselves on the open range/in the wild, hornless cattle could be at a distinct disadvantage if they need to defend themselves from predators. A hornless bull, in the wild would be at a distinct disadvantage in a fight for dominance and the right to breed if the other male has horns.