What are a rhino's tusks made of?

Answer

A rhino's horn is made up of keratin and calcium. Elephants are the only other tropical animals that have tusks. A rhino's horn can grow to up to 45cm.
Q&A Related to "What are a rhino's tusks made of?"
Answer It is made of keratin, the same substance as hair and fingernails.
http://wiki.answers.com/Q/What_is_a_Rhinoceroc_Tus...
Rhinoceros horn isn't really a horn at all, it's made up of tightly compressed hair.
http://www.chacha.com/question/what-is-a-rhino's-t...
A Rhino horn is made of keratin. The horn is a pretty distinctive feature. Name 'rhinoceros' is actually made of 2 Greek words meaning 'nose' and 'horn'.
http://www.kgbanswers.co.uk/what-is-a-rhino-tusk-m...
Unlike other horned animals, which have a bony core encased in keratin, rhinos have only mineral deposits of calcium and melanin at the core of their horns, more akin to hooves and
http://www.ehow.com/facts_7499547_horn-rhino-made....
Explore this Topic
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Rhinos are critically endangered because of poachers. People poach rhinos for their horns which are made of compacted hair and keratin that can be used to produce ...
Elephant tusks can be worth a different price from piece to piece. For example, an elephant tusk that was made into ivory piano keys is worth about $115.00. A ...
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