Assertion: caribou's antler | /r/MadeOf | bone
Facets:
value: unlike horns
type: OTHER
value: completely
type: DEGREE
Source sentences:
text: Fact #5: Antlers are made of bone
text: Antlers are made completely of bone, whereas horns on animals of the bovidae family, are part bone which is covered by a sheath made of specialized hair follicles.
text: Antlers are made of bone which can grow at a rate of 2.5 centimeters (0.98 in) per day.
text: Antlers are actually made of bone, fall off and are regrown each year, and are usually only found on the males of the species.
text: Antlers are unique to this family and are made of bones, unlike horns, which are made of keratin.