Bull Horns consist of keratin , and the term “horn” is used to refer to this material, sometimes including similarly solid keratin from other parts of animals, such as hoofs . Avoid using your horn between 11 p Horns from JC Whitney’s huge collection are powerful and deliver an ultra-loud sound that’s just impossible to ignore. Bull horn wrap necklace ‘Organic Chic’ by Viviana Velez can be found in jewelry categories such as Wrap Necklaces , Silk Necklaces and Horn Necklaces . More muscular and aggressive than the female of the species, the cow, the bull has long been an important symbol in many cultures, and plays a significant role in both beef and dairy farming, and in a variety of other Bull Horns cultural activities. See also ” Minotaur and The Bull of Crete ” ( below ) for a later incarnation to the Minoan Bull.. Horns start to grow soon after birth, and continue to grow throughout the life of the animal (except in pronghorns, which shed the outer layer annually, but retain the bony core). Bull Horns Sacred