What Are Rhinos 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 Rhinos Tusks Made of"
It is made of keratin, the same substance as hair and fingernails.
http://wiki.answers.com/Q/What_is_rhino_tusk_made_...
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...
Rhino's, which are native to Africa, have something in common with humans. Their horns are made of a substance called keratin. This is the same material our hair and fingernails are
http://answers.ask.com/Science/Biology/what_is_a_r...
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Elephant's tusks are mainly made from a tough substance called ivory. Their tusks have led to their downfall as they are hunted because of their precious ivory ...
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