Cow horn is known simply as horn, It is constructed of a covering of keratin and other proteins which surround a core of live bone. Scientific names are available for specific cow bones but not the cow bone material in general.
That all depends on what bone[s] you are referring to, since there are over 200 bones in a cow's body.
Sternum.
The scientific name for a Holstein dairy cow would be Bos primigenius taurus.
A steer is a male uncastrated bovine. They have the same scientific name as a heifer or a cow or a bull, a bovine.
Axonopus compressus
Bos primigenius taurus.
cow
Keratin and bone, primarily.
cow sea
The scientific name for a Holstein dairy cow would be Bos primigenius taurus.
a cow you idiot
Bovine feeces
Vigna unguiculata
Feces.
The scientific or taxonomic name would be Dermacentor reticulatus.
Tanned bovine dermis.
The scientific or taxonomic name would be Plethodon punctatus.
The scientific or taxonomic name would be Campsis radicans.
All domestic cattle have the same scientific name no matter the breed: Bos taurus