Assertion: cow's horn | /r/HasProperty | permanent growths
Facets:
Source sentences:
text: As already stated horns are permanent growths made of bone and keratin, they do not branch out, and are found on animals belonging to the family Bovidae (Bovids).
text: Horns are a permanent part of the animal, which means the horns an animal is born with are the same horns it has its entire life.